feat: override syntax for class members, assemblyscript can simply ignore it

[trusktr]

F.e.

class Base {
  method() {...}
}

class Foo extends Base {
  override method() {...}
}

This is useful with TS tooling because it can detect errors like this:

class Base {
  methodRenamed() {...}
}

class Foo extends Base {
  override method() {...} // This member cannot have an 'override' modifier because it is not declared in the base class 'Base'.
}

otherwise method in Foo would silently pass along as a new method with no hint that it should be re-named.

[MaxGraey]

It's optional feature (--noImplicitOverride) since TypeScript 4.3 if I'm not mistaken

[trusktr]

Yeah, newer feature of TS