[ANY] feat: Allow mp_disable_respawn_times to work with specific team numbers

[Pandaptable]

Description

Makes mp_disable_respawn_times act as a bitfield, the team number represents the bit that needs to be set to disable respawn times for that team. In TF2 for example mp_disable_respawn_times 8 would disable respawn times for BLU team only.

mp_disable_respawn_times 1 represents TEAM_UNASSIGNED, which is an impossible team, therefore its used as legacy support to respawn everyone.

[henke37]

This should probably be a bitfield, not a single team number.