Add Missing Methods from tf2 wiki

[Tidwell]

Not really sure what on this is reliable and what isn't, but should probably look at seeing what can be supported.

https://wiki.teamfortress.com/wiki/WebAPI

[Tidwell]

Xenira added a number of these methods, which is fantastic! There are still a few more that exist in the wiki that we do not yet support. Additional PRs to add support for these remaining endpoints are welcome!