Add syntax for armor stand features

[sovdeeth]

Suggestion

Armor stands have various functionality that's not yet exposed in Skript. This issue serves as a checklist of what we do and don't have.

• [ ] Disabled slots (paper has more elaborate locking api, optional)
  • [ ] effect?
  • [ ] expression (with changer?)
  • [ ] condition
• [x] show/hide arms
  • [x] effect
  • [x] condition
• [x] show/hide baseplate
  • [x] effect
  • [x] condition
• [x] marker
  • [x] effect
  • [x] condition
• [x] size
  • [ ] expression (changer?)
  • [x] effect?
  • [x] condition
• [ ] poses (big ask, may or may not be feasible)
• [x] canMove
  • [x] effect
  • [x] condition
• [x] canTick
  • [x] effect
  • [x] condition

Agreement

• [X] I have read the guidelines above and affirm I am following them with this suggestion.

[ShaneBeee]

Maybe at the same time add other armor stand things like show arms, base plate, marker, size, I can't remember what else there is.

[sovdeeth]

I'll just make this a general armor stand features issue, tbh