Visualization of the PyHive codebase

[ivanmilevtues]

This PR contains a visualizaiton of its codebase.

The idea of these diagrams is that they will help people get up-to-speed with the codebase. You can see how they render in the GitHub UI here: https://github.com/CodeBoarding/GeneratedOnBoardings/blob/main/PyHive/on_boarding.md

The diagram is generated via Static Analysis and LLMs. I would love to hear how do you go about on-boarding and maintaining documentation in Dropbox. Any feedback is more than welcome!

Full disclosure: we're trying to turn this into a startup, but we're still in a very early stage and figuring out what will actually be useful for people.