Improve CMake build system integration

[brainos233]

This PR enhances the cmake build system integration, specifically, it does the following things:

• Set -fuse-ld=lld directly, this is llvm's recommend method to use lld in https://lld.llvm.org/#using-lld
• Remove ccache from the build utils, since ccache is only effective for compiler
• Split variable cmake into cmake_configure and cmake_args for clarity
• Use ninja as default generator for cmake to speed up building process
• Add CMAKE_BUILD_PARALLEL_LEVEL to control the maximum number of build processes
• Call cmake to compile and install, which allows set generator without changing compile and install commands, and making CMAKE_BUILD_PARALLEL_LEVEL take effect automatically
• Prefer to use cmake's own way of setting C/C++ standard and linker type if available, this prevents cmake projects from setting the default value for CMAKE_<LANG>_STANDARD and overwriting renpy's C/C++ std version