[feat] Allow gamecontroller to override character snapshots

[TsFreddie]

e.g. in a "among-us" type of gamemode, a player can be teleported into a mini-game area while other players can still see the teleported player in the overworld doing their "task". (i.e. see the overrided character state)

Also it can be used for making a tournament lobby with character showing in the brackets or something like that, which means the team of said character should also be overridable (preferablly at the same time/in the same call).

[TsFreddie]

Or a more general purpose solution would be to allow gamemode to force snap a character state / player state for a specific client id. And the real character/player with the same id is automatically skipped. This way MomentCap should be possible to make in a GameController as well.

[TsFreddie]

Proposal:

struct SCharacterState {
  bool m_Enabled, // if you want to hide a player/tee, you can just override it and set this to false
  bool m_Alive,      // if you want to hide a tee but keep the player (or override it), then you can set this to false
  vec2 m_Pos,
  float m_Angle,
  // ... other states,
  // probably need to make these private and only settable via a member function that also set a dirty flag so we can notify 0.7 clients with name change/clan change
  bool m_OverridePlayerInfo, // set this to true if you want to modify the player instead of letting them control their own name/clan/skin.
  char m_aName[MAX_NAME_LENGTH],
  char m_aClan[MAX_CLAN_LENGTH],
  CTeeInfo *m_Skin
}

SCharacterState *OverrideCharacterState(int ClientID); // create a SCharacterState that copies the current character/player state and allows GameController to keep the pointer and modify the structure.
ResetCharacterState(int ClientID); // free the SCharacterState struct and resume to sending the real player/character state (if there is any).