FNF Mission Template v4.2.0

1. Changed: Re-write of objective system to allow more dynamic creation of objectives, including sequential objectives and mid mission objectives.

2. Added: Support for custom objective names and descriptions, along with the option to have code run on objective completion.

3. Added: Global notifications for if a non-spectator enters or exits zues.

4. Added: Backpack locking during safe start to prevent players stealing each others equipment without permission

5. Added: Performance options to enable high player count missions under less than ideal circumstances