Add new wren_lib static library project with all VM source files, update wren CLI project to depend on wren_lib and link against it, move VM sources out of CLI project filters, and add Debug/Release build output directories to .gitignore
Add new wren_lib static library project with all VM source files, update wren CLI project to depend on wren_lib and link against it, move VM sources out of CLI project filters, and add Debug/Release build output directories to .gitignore