Fix Godot 4.0 compile errors, update JavaScript integration, refactor code, and address minor issues

[fire]

To review the changes on top of gd4.

This is blocked on the build process with mvsc.

[Geequlim]

It's ok to keep master to compatiable with godot master branch.
It should be better to rename current master branch to 3.x for someone who need that and mention it in readme.
@fire Can you help make a new branch for 3.x and update the readme in this pr ?

[fire]

Since I'm not able to work on this immediately.

Here's the plan:

1. Create a 3.x branch.
2. Add phrasing to the README. Need some help on this.

[fire]

The current errors don't make sense:

scons: *** [thirdparty/glslang/glslang/MachineIndependent/attribute.windows.editor.x86_64.o] Error 1
In file included from thirdparty/glslang/glslang/MachineIndependent/ParseHelper.h:53,
                 from thirdparty/glslang/glslang/MachineIndependent/attribute.cpp:41:
thirdparty/glslang/glslang/MachineIndependent/SymbolTable.h:648:18: error: 'uint32_t' does not name a type
  648 |     static const uint32_t LevelFlagBitOffset = 56;
      |               ```

[wiredmatt]

Sounds related to this: godotengine/godot#77949

I get the same error locally if I try to build it using MSYS2 MinGW. Not sure if downgrading GCC to < 13 would change anything, but I can't afford to mess with it locally because it took me ages to get it working properly.

You could also try with UCRT64 instead of mingw

[fire]

It builds when I copy the module into git godot engine https://github.com/V-Sekai/godot/tree/vsk-javascript.

Note that only linux and windows platforms are set to build.

[jaune]

@fire it compile and "run" => #161

It's really durty, but it's a first step.

I will rebase, and use godot 4.1.1-sable.

[jaune]

@fire Can I delete #161? I will have some time next week, I can try to make the CI pass for Windows.

What version for Godot this PR should work with?

[fire]

I am targeting master because of graph node changes.

[fire]

@jaune if you wish you can close it.

[jaune]

@fire

I am targeting master because of graph node changes.

CI uses the last commit on branch 4.0 and not master because of GODOT_BASE_BRANCH: '4.0' in workflows.

PR #162 should fix the CI, I can not run the CI to make sure of it.