Document frames, types and library

[Nukesor]

Most types are fairly complex and only used under specific circumstances.

For this library to be useful, it should reflect as much information from the official specification as possible. Otherwise users have to switch between the ieee 802.11 specs and this library back and forth.

A good start would be to simply document the structs and enums, this will already help a lot.
Documenting unclear enum variants and functions would be the next logical step.

However, any documentation PRs at all are very much welcome!