LoadMapRule grid storage rework

[deltanedas]

About the PR

moved Map and MapGrids into its own component RuleGridsComponent
antag spawner finding is moved to RuleGridsSystem

Why / Balance

• map loader shouldnt care about antag stuff
• antag stuff shouldnt care about how grids are loaded, you can use a system that isnt LoadMapRule

Technical details

• added RuleLoadedGridsEvent which makes RuleGridsComponent store the grids a system loaded
  other systems can also subscribe to this to do work right after the grids are loaded, or they can access Map and MapGrids from the component when the rule is started.
• anything checking LoadMapRule for grids now checks RuleGrids instead
• made maps created by LoadMapRule no longer have a debug name (which was visible on shuttle console !!! not confusing at all) and instead its just logged
• if LoadMapRule fails to load a map it actually logs it and ends the rule
• if preloading is disabled it immediately ends the rule instead of having nullspace ghost roles or failing tests
• moved ForceEndSelf from StationEventSystem to GameRuleSystem since its useful, events can still use it because of inheritance

Media

loneop still works

• I have added screenshots/videos to this PR showcasing its changes ingame, or this PR does not require an ingame showcase

Breaking changes

LoadMapRule now requires the new RuleGrids component to spawn antags on it and have grids looked up later.

Changelog
no cl no fun

[github-actions]

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[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

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