Rewrite basic docs, without ExampleCrossPythonModule

[jodersky]

In light of the discussion here, #4042, we should re-write the example docs of pythonlib/basic, with a plain ExampleCrossModule

[jodersky]

Would you mind taking a shot at this, @himanshumahajan138?

[himanshumahajan138]

@jodersky ya for sure i will add docs

[himanshumahajan138]

also should we make this inheritable(means we can inherit these docs later for other examples based on same pattern) or simple ??

[jodersky]

I would suggest we keep it as simple as possible to start.

Python support is a brand new feature, and while of course we want to implement a fully functional user experience, we also need to acknowledge that the first version will be no where near as polished as the scala and java support mill currently has. All to say, there will most likely be refactoring work to be done, and we can look into how we can extract common doc behavior when that time comes. Before is probably premature