Implement forced team start mappings

[SadPencil]

This PR added a forced team start mapping for game modes such as a 2v2 mode.

It added two settings for a game mode:

• ForceTeamStartMappings
• TeamStartMappings

Example in MPMaps.ini file:

[Tournament 2v2]
CustomIniPath=INI\Tournament 2v2.ini
ForcedOptions=Tournament 2v2ForcedOptions
MinPlayersOverride=4
ForceNoTeams=false
ForceTeamStartMappings=true
TeamStartMappings=A,B,A,B

A,B,A,B enforces Player 1 & 3 is allying against 2 & 4

Example screenshot:

---

Note: originally in commit 4cf9b33, RefreshTeamStartMappingPresets() was called in each for loop iteration. Link. This is changed to call it only once after the loop.

[SadPencil]

error : IOException: The process cannot access the file 'D:\a\_temp\_runner_file_commands\set_env_c5738185-38f2-427d-ba9f-0798d9cdcb97' because it is being used by another process.

This build failure should be a random bug. Trying to re-trigger building.

[github-actions]

Nightly build for this pull request:

• artifacts-YR.zip
• artifacts-TS.zip
• artifacts-Ares.zip
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