Adds special endings for the crew completing none, or some of the objectives. Syndicate victories are now player-obtainable

[Gboster-0]

What this PR does

• Makes it so world.end() automatically calculates what ending it should have, if not given one

Adds in the following endings:

• Boring Victory
  Condition: No objectives were failed nor completed. Total nothingness

• Minor Nanotrasen Victory
  Condition: some of the objectives are completed

Changes the following endings conditions to appear:

• Nanotrasen Victory
  Condition: All objectives are completed

• Syndicate Victory
  Condition: if a lot of objectives were failed and not enough completed
  example of when it happens:
  0 completed, 1 failed
  1 completed, 3 failed
  2 completed, 5 failed

Why it should be added to the game

Imo its a bit boring that EVERY victory is a nanotrasen victory without admin intervention.
Thus i think making it so players have an impact on the ending is fun.

[Stalkeros2]

I would approve this PR, but I am uncertain if something like this'd follow Burger's ideas.

[BurgerLUA]

I approve, I'm just worried there might be a bug somewhere but lets find out.