[Release] Binaries too big, remove internal python and statically compile clang dynamic library

[chai2010]

Enhancement

All versions of kclvm release larger than 150MB, smaller binaries are always welcome.

[Peefy]

I personally recommend to consider the static linking of LLVM at the same time. By statically linking the packaging of libraries such as lld into kclvm_cli, the binary size can be effectively reduced.

[ldxdl]

I think we might need to have a small goal that our various users feel comfortable with, and then figure out how to make it.