Add build support for 32 bits

[jschmidt42]

Add support to build a 32 bits version of Wallet.

Issue: #38

Build instructions

git clone git@github.com:wiimag/wallet.git

Using cmake

Generate solution

cmake --no-warn-unused-cli -DBUILD_ENABLE_BACKEND=ON -DBUILD_MAX_JOB_THREADS=4 -DBUILD_MAX_QUERY_THREADS=8 -S./ -B./projects/.build-win32 -G "Visual Studio 17 2022" -A Win32

Open the solution

start ./projects/.build-win32/wallet.sln

Build the solution

Build the Release/Win32 configuration

Using ./run

./run generate win32 build release

Then you can launch the executable ./build/wallet32.exe