[GDExtension] Implement support for typed arrays.

[bruvzg]

Exposes missing Array methods, and add typed arrays to the GDExtension JSON.

godot-cpp part - godotengine/godot-cpp#841

[raulsntos]

Does this supersede #64249?

[bruvzg]

As usual, it will need rebase after godotengine/godot-cpp#841 merge to pass CI.

[akien-mga]

Looks fine, but I don't see what are the TypedArray related changes in TextServers?

[akien-mga]

This also the discussion on #64249 on how to handle this kind of generics in different languages.

[bruvzg]

Looks fine, but I don't see what are the TypedArray related changes in TextServers?

TextServer already was using TypedArrays (and was unbuildable for this reason), TS changes are to make it buildable as an extension again, but not directly related to TypedArray.

[bruvzg]

This also the discussion on #64249 on how to handle this kind of generics in different languages.

TypedArrays are its own subtype in the engine, so for godot-cpp method binds should have it as an independent type as well.

The generics, like Dictionary content or more specific contents of the generic Array, are used only for properties, and irrelevant for C++ bindings. So I guess it's better to have it as extra info (like in #64469) for other language bindings, if they need it.

[akien-mga]

I'll merge even though the CI build with godot-cpp hasn't completed yet, to unblock other PRs (as the counterpart merged in godot-cpp breaks building against current Godot code until this is merged).

[akien-mga]

Thanks!