docs: initial addition of documentation

[nkapila6]

This PR includes the following.

• Ported entire documentation from mlrose's sphinx implementation to a markdown based SSG: mkdocs
• A couple of edits were required as the port wasn't clean.
• Some of the markdown files needed to be written from scratch as I could not port them directly.
• Changed all occurrences of 'mlrose' to 'mlrose-ky'
• Added better navigation

The docs can be viewed here: mlrose-ky docs

[nkapila6]

I can't see an issue section in the repo.

The only question I have is what else is required to add? Apart from the below:

• covering a tutorial on hiive's runners.
• fixing the slug links, eg: url/post#h1

Could you list out your enhancements so I can start working on it? @knakamura13

[knakamura13]

Could you list out your enhancements so I can start working on it?

Here's my list of tasks for this project. Task 1 is completed; tasks 2—4 are in progress.

1. Fix all Python warnings and errors (except for some unavoidable warnings such as "duplicate code") ✅
2. Add Python 3.10 type hints to all function and method definitions, plus all method properties (e.g., self.foo: str = 'bar')
3. Add NumPy Doc docstrings to all functions and methods, plus at least a one-line docstring at the top of every file summarizing the file's contents
4. Add tests using Pytest, aiming for 100% code coverage
5. Search for TODO, FIXME, or other comments and resolve their respective issues
6. Optimize vanilla Python loops that can be vectorized with NumPy
7. Improve any other sub-optimal code, bugs, code quality issues, etc
8. Remove any commented-out code

[knakamura13]

lgtm