Identify existing usages of `/players` endpoints

[myssto]

Most endpoints of the PlayersController need to either be removed or refactored. To safely do this, their existing usages in the processor and web need to be identified. @S1n1st3rn3ss @AkinariHex @hburn7 Please comment on this issue any known usages of the below endpoints so we can have something to work off of.

Tasks:

• [ ] Identify usage of GET /players/all
• [ ] Identify usage of GET /players/ranks/all
• [ ] Identify usage of GET /players/id-mapping
• [ ] Identify usage of GET /players/country-mapping

[hburn7]

From what I see, otr-web does not use any of these endpoints.

The processor uses:

• /players/ranks/all
• /players/country-mapping