Use LocalVector instead of std::vector

[dementive]

This removes (almost) all of the std::vector usage and replaces it with Godot's LocalVector.

There is still one place in classes/wrapped.cpp where std::vector is still used that I didn't want to mess with because it calls push_back during static initialization and the allocation function that LocalVector::push_back uses from the GDExtension API isn't registered yet. Reworking this to figure out a better time to call push_back didn't look too fun so I'm just going to leave it as is.

I tested the build time difference with ClangBuildAnalyzer and got these results:

With these changes:

Executed in 103.10 secs

**** Time summary:
Compilation (1025 times):
Parsing (frontend): 1640.2 s
Codegen & opts (backend): 190.6 s

Without these changes

Executed in 106.30 secs

**** Time summary:
Compilation (1025 times):
Parsing (frontend): 1682.0 s
Codegen & opts (backend): 184.8 s

[Ivorforce]

Makes sense to me. I'm not aware of any risks / caveats of LocalVector over std::vector.

[bruvzg]

Since we have engine container templates in godot-cpp it makes sense to use them (most of the std:: usage predate addition of templates).

[dsnopek]

Thanks!

[dsnopek]

Cherry-picked for 4.5 in PR #1870

[dsnopek]

Cherry-picked for 4.4 in PR #1871