Refactor

[mavenlin]

Changes:

• Refactor the repo rule so that it runs much faster.
  The repository rules are quite tricky, originally, the download kept restarting because the labels are not ready, we now explicitly check for all the labels are ready before anything more expensive happens.
• Add extern C when including the libxc header files, originally on mac and linux the problem is neglected because the symbol names are compatible between c/c++ somehow. On windows this fails.
• Change the directory names, originally, bazel creates an extra jax_xc folder following the workspace name which kept interfering with the jax_xc package on windows, making it unable to find the real jax_xc package.
• Properly set the extension to pyd for windows, notice that the extension has to be so for mac & linux and pyd for windows for pybind to work. Therefore, we have to patch the pylibxc code to use the same binary when doing load_library. It is funny that if we have two copies of binary file with different extensions, it causes strange runtime error maybe due to symbol conflict.
• Add a test for the wheel before uploading them.
• Windows doesn't provide abi tag, set it to python tag instead.