API Support for Arbitrary PyPi Modules

[Severn-J-Lortie]

Any pure python .whl file can be run in Pyodide. The process we should use to bring them into the work function is as follows:

1. Download the .whl from PyPi
2. Add it to the Emscripten FS
3. Install it with Micropip
   Those steps should be automated by Bifrost2