Allow Vector-likes in all operations

[AstraLuma]

Make all operations work with vector-likes.

[pathunstrom]

I like where we're going with this.

Suggesting we put most of this under a class method .from(value: Union[Sequence, Mapping[str, numbers]]) that just checks length then tries to instantiate and raises a Value error if it fails. Most of the logic is clear: Must be length 2, and look like a vector (in the case of maps), and then we can get a meaningful error everywhere, also provides a utility for people doing things programatically.

[AstraLuma]

Standard python is that conversion should be in the constructor, ie Vector2({Vector-like}), but otherwise yes.

[pathunstrom]

I only suggest a class method because the constructor is Vector2(x, y) and I want to keep that as a general rule. Class method as an alternative constructor is pretty well established pattern (see int.from_bytes).

[pathunstrom]

Since we're modifying this, lets switch to F-strings.

[pathunstrom]

If we do this, we need to change the type hint.

On that front, we should probably build a union or type var for this.

[AstraLuma]

Addressed everything.

Not super happy with the name .convert(), but I couldn't come up with a better one.

[pathunstrom]

I would have just used Vector2.from(vector_like) but convert is fine for now.

[AstraLuma]

from is a keyword; can't be used as method names.