DOC API reference has missing or malformed content

[romanlutz]

Describe the issue linked to the documentation

Lots of parts of the API reference has missing or malformed text. Examples:

• https://azure.github.io/PyRIT/api.html 4/5 entries are empty here so that needs updating. Essentially, every empty description box is a problem.
• pyrit.common appears to be missing. Especially initialize_pyrit should be here.

Suggest a potential alternative/fix

Some entries in the API docs are just not needed. Perhaps we can stop exporting them? It's sometimes a reasonable fix.
Some need a simple description. Some need an improved description.

Note: one can open a PR for a single small fix. One does not have to fix all of them or even multiple to make a contribution! Every little piece helps!