Mac Arm M1 Binaries

[aminya]

We need someone with M1 to build binaries.

Contributing guidelines include the instructions for building:
https://github.com/aminya/minijson#contributing

[aminya]

Automatic installation might not support Arm64 for Mac yet. Here is the manual install script:

export ARCH=arm64
# Manually install ldc 
# Due to https://github.com/dlang-community/setup-dlang/issues/51
curl -LJO https://github.com/ldc-developers/ldc/releases/download/v1.28.0/ldc2-1.28.0-osx-$ARCH.tar.xz
tar -xf ldc2-1.28.0-osx-$ARCH.tar.xz
rm ldc2-1.28.0-osx-$ARCH.tar.xz
LDC_PATH="~/ldc"
mkdir -p $LDC_PATH
mv ldc2-1.28.0-osx-$ARCH $LDC_PATH
# Activate ldc
export LIBRARY_PATH="$LDC_PATH/lib${LIBRARY_PATH:+:}${LIBRARY_PATH:-}"
export LD_LIBRARY_PATH="$LDC_PATH/lib${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH:-}"
export PATH="$LDC_PATH/bin${PATH:+:}${PATH:-}"
export DMD="ldmd2"
export DC=ldc2