Handle received TCP packages

[sornas]

Everything doesn't need to be handled but it's still nice to have all these in one place.

https://docs.rs/mumble-protocol/0.4.1/mumble_protocol/control/msgs/index.html:

• [ ] ACL
• [ ] ACL_ChanACL
• [ ] ACL_ChanGroup
• [x] Authenticate
• [ ] BanList
• [ ] BanList_BanEntry
• [x] ChannelRemove
• [x] ChannelState
• [ ] CodecVersion
• [ ] ContextAction
• [ ] ContextActionModify
• [x] CryptSetup
• [ ] PermissionDenied
• [ ] PermissionQuery
• [x] Ping
• [ ] QueryUsers
• [x] Reject
• [ ] RequestBlob
• [ ] ServerConfig
• [x] ServerSync
• [ ] SuggestConfig
• [x] TextMessage
• [x] UDPTunnel
• [ ] UserList
• [ ] UserList_User
• [x] UserRemove
• [x] UserState
• [ ] UserStats
• [ ] UserStats_Stats
• [ ] Version
• [ ] VoiceTarget
• [ ] VoiceTarget_Target