Mm/mission groups

[MatthewMarinets]

What is this fixing or adding?

Adding mission groups (and some minor item group code refactors).

Note that on AP main, there's a PR up (#3280 ) which breaks the current call to .verify_keys() in Sc2ItemDict. I updated it to no longer call the function, and also verified it still displayed sensible error messages in response to typos / yaml errors.

How was this tested?

• Added some basic unit tests
• Did a test generation using some mar sara mission groups and checked the spoiler
• Tried generating with a few mission groups with typos to verify the error message fuzzy search would also recommend mission groups

If this makes graphical changes, please attach screenshots.

  excluded_missions:
    # Guarantees that these missions will not appear in the campaign
    # Doesn't apply to vanilla mission order.
    ### No builds
    - Belly of the Beast
    - The Infinite Cycle
    - Supreme
    # - Whispers of Doom
    - Ghost of a Chance
    - Piercing the Shroud
    - With Friends Like These
    - Conviction
    # - Enemy Within
    - Evil Awoken
    - The Infinite Cycle
    # - Templar's Return
    # - In the Enemy's Shadow
    ### Very Hard
    - All-In
    - Salvation
    # - Into the Void
    - The Essence of Eternity
    - Amon's Fall
    # - End Game
    - PlANEt AiuRR

Exception: Mission PlANEt AiuRR from option ExcludedMissions(All-In, Amon's Fall, Belly of the Beast, Conviction, Evil Awoken, Ghost of a Chance, Piercing the Shroud, PlANEt AiuRR, Salvation, Supreme, The Essence of Eternity, The Infinite Cycle, With Friends Like These) is not a valid mission name from Starcraft 2. Did you mean 'Planet Aiur' (91% sure)

[MatthewMarinets]

Alas, trying to import this in the top of the file results in a circular dependency and the generator always crashing. Another option would be to put the mission group names on the world object, though that would be tightening the assumptions on when this function is called, and the PR on main makes me think that interface is not entirely nailed down yet.