Implement propertyType hint annotations

[chippmann]

Implement all needed propertyHint annotations. Like for example:

• @IntRange

These annotations should have their arguments optional and in the correct type. For example:

• @IntRange
  start: Int
  end: Int
  step: Int

Hints:
A hint on what should and could be implemented: http://docs.godotengine.org/en/latest/getting_started/scripting/gdscript/gdscript_exports.html#doc-gdscript-exports