Using fast_float library for faster parsing of 64 decimal strings. (#11884)

Fixes #8825 

We're using the fast_float library[1] in our (compiled-in)
floating-point fast_float_strtod implementation for faster and more
portable parsing of 64 decimal strings.

The single file fast_float.h is an amalgamation of the entire library,
which can be (re)generated with the amalgamate.py script (from the
fast_float repository) via the command:

```
python3 ./script/amalgamate.py --license=MIT > $REDIS_SRC/deps/fast_float/fast_float.h
```

[1]: https://github.com/fastfloat/fast_float

The used commit from fast_float library was the one from
https://github.com/fastfloat/fast_float/releases/tag/v3.10.1

---------

Co-authored-by: fcostaoliveira <filipe@redis.com>

.github/workflows/ci.yml

@@ -62,7 +62,7 @@ jobs:
     - uses: actions/checkout@v4
     - name: make
       run: |
-        sudo apt-get update && sudo apt-get install libc6-dev-i386
+        sudo apt-get update && sudo apt-get install libc6-dev-i386 gcc-multilib g++-multilib
         make REDIS_CFLAGS='-Werror' 32bit
 
   build-libc-malloc:
@@ -79,7 +79,7 @@ jobs:
     - uses: actions/checkout@v4
     - name: make
       run: |
-        dnf -y install which gcc make
+        dnf -y install which gcc gcc-c++ make
         make REDIS_CFLAGS='-Werror'
 
   build-old-chain-jemalloc:
@@ -96,6 +96,7 @@ jobs:
         apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
         apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
         apt-get update
-        apt-get install -y make gcc-4.8
+        apt-get install -y make gcc-4.8 g++-4.8
         update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 100
+        update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 100
         make CC=gcc REDIS_CFLAGS='-Werror'

.github/workflows/daily.yml

@@ -94,8 +94,9 @@ jobs:
         ref: ${{ env.GITHUB_HEAD_REF }}
     - name: make
       run: |
-        apt-get update && apt-get install -y make gcc-13
+        apt-get update && apt-get install -y make gcc-13 g++-13
         update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 100
+        update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-13 100
         make CC=gcc REDIS_CFLAGS='-Werror -DREDIS_TEST -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3'
     - name: testprep
       run: apt-get install -y tcl8.6 tclx procps
@@ -211,7 +212,7 @@ jobs:
         ref: ${{ env.GITHUB_HEAD_REF }}
     - name: make
       run: |
-        sudo apt-get update && sudo apt-get install libc6-dev-i386
+        sudo apt-get update && sudo apt-get install libc6-dev-i386 g++ gcc-multilib g++-multilib
         make 32bit REDIS_CFLAGS='-Werror -DREDIS_TEST'
     - name: testprep
       run: sudo apt-get install tcl8.6 tclx
@@ -456,7 +457,7 @@ jobs:
     - name: testprep
       run: |
         sudo apt-get update
-        sudo apt-get install tcl8.6 tclx valgrind -y
+        sudo apt-get install tcl8.6 tclx valgrind g++ -y
     - name: test
       if: true && !contains(github.event.inputs.skiptests, 'redis')
       run: ./runtest --valgrind --no-latency --verbose --clients 1 --timeout 2400 --dump-logs ${{github.event.inputs.test_args}}
@@ -521,7 +522,7 @@ jobs:
     - name: testprep
       run: |
         sudo apt-get update
-        sudo apt-get install tcl8.6 tclx valgrind -y
+        sudo apt-get install tcl8.6 tclx valgrind g++ -y
     - name: test
       if: true && !contains(github.event.inputs.skiptests, 'redis')
       run: ./runtest --valgrind --no-latency --verbose --clients 1 --timeout 2400 --dump-logs ${{github.event.inputs.test_args}}
@@ -678,7 +679,7 @@ jobs:
         ref: ${{ env.GITHUB_HEAD_REF }}
     - name: make
       run: |
-        dnf -y install which gcc make
+        dnf -y install which gcc make g++
         make REDIS_CFLAGS='-Werror'
     - name: testprep
       run: |
@@ -720,7 +721,7 @@ jobs:
         ref: ${{ env.GITHUB_HEAD_REF }}
     - name: make
       run: |
-        dnf -y install which gcc make openssl-devel openssl
+        dnf -y install which gcc make openssl-devel openssl g++
         make BUILD_TLS=module REDIS_CFLAGS='-Werror'
     - name: testprep
       run: |
@@ -767,7 +768,7 @@ jobs:
         ref: ${{ env.GITHUB_HEAD_REF }}
     - name: make
       run: |
-        dnf -y install which gcc make openssl-devel openssl
+        dnf -y install which gcc make openssl-devel openssl g++
         make BUILD_TLS=module REDIS_CFLAGS='-Werror'
     - name: testprep
       run: |
@@ -907,6 +908,9 @@ jobs:
       (github.event_name == 'workflow_dispatch' || (github.event_name != 'workflow_dispatch' && github.repository == 'redis/redis')) &&
       !contains(github.event.inputs.skipjobs, 'freebsd')
     timeout-minutes: 14400
+    env:
+      CC: clang
+      CXX: clang++
     steps:
     - name: prep
       if: github.event_name == 'workflow_dispatch'
@@ -925,7 +929,7 @@ jobs:
         version: 13.2
         shell: bash
         run: |
-          sudo pkg install -y bash gmake lang/tcl86 lang/tclx
+          sudo pkg install -y bash gmake lang/tcl86 lang/tclx gcc
           gmake
           ./runtest --single unit/keyspace --single unit/auth --single unit/networking --single unit/protocol
 
@@ -1080,8 +1084,9 @@ jobs:
         apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
         apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
         apt-get update
-        apt-get install -y make gcc-4.8
+        apt-get install -y make gcc-4.8 g++-4.8
         update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 100
+        update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 100
         make CC=gcc REDIS_CFLAGS='-Werror'
     - name: testprep
       run: apt-get install -y tcl tcltls tclx
@@ -1128,9 +1133,10 @@ jobs:
         apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
         apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
         apt-get update
-        apt-get install -y make gcc-4.8 openssl libssl-dev
+        apt-get install -y make gcc-4.8 g++-4.8 openssl libssl-dev
         update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 100
-        make CC=gcc BUILD_TLS=module REDIS_CFLAGS='-Werror'
+        update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 100
+        make CC=gcc CXX=g++ BUILD_TLS=module REDIS_CFLAGS='-Werror'
     - name: testprep
       run: |
         apt-get install -y tcl tcltls tclx
@@ -1182,8 +1188,9 @@ jobs:
         apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
         apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
         apt-get update
-        apt-get install -y make gcc-4.8 openssl libssl-dev
+        apt-get install -y make gcc-4.8 g++-4.8 openssl libssl-dev
         update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 100
+        update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 100
         make BUILD_TLS=module CC=gcc REDIS_CFLAGS='-Werror'
     - name: testprep
       run: |