Autocompletion and #include improvements

[FalsePattern]

• Fixed Vector index read error  #36 - Array index access of struct member vectors
• Added support for multi-level recursive including of user types
• Fixed relative include paths when including other files from different directories
• Added support for Minecraft shaderpack "absolute path" includes
  With this one, something like #include "/foo.glsl" will walk up the file tree, looking for this directory: shaderpacks/<any directory name>/shaders/, and evaluates the absolute path as a child path of this directory
• Fixed autocompletion of #version version number, and also added autocompletion for the core/compatibility/es version suffixes
• Added cross-directory #include autocompletion
• Added autocomplete for custom functions
• Fixed autocomplete on lines in front of existing expression assignment statements
• Fixed autocomplete inside unfinished statements
• Support for sodium #import <sodium:include/fog.glsl> statement
  • Resolve path properly inside the mod
  • Able to search dependency mods
• Making #import and #include clickable reference
• Support for NV_gpu_shader5 pointers uint *data;
• Fix bool assignements such as bool a = true==true;

Supersedes #47 (part 3 of 4)

Unfortunately I was not able to break up this batch of commits into even smaller PRs, as a lot of them depend on changes in preceding commits, and removing those cross-commit dependencies would make merging the split pull requests a pain.

[Lundis]

I'm looking very much forward to these improvements, but what happened to the .glsl_idea_root marker file you mentioned in the other PR? I read the code from my phone, and I'm unfamiliar with both the language and architecture, so maybe I just missed it? It would be great if instructions for either solutions were documented somewhere. Anyway thank you very much for your work 🙏

[FalsePattern]

oops, i accidentally missed that commit while splitting up the PR, thanks for pointing it out!

[FalsePattern]

Sorry about taking so long to fix this pr, but the rebased version should work properly.

Commit 6f39fa8 slightly modifies the infinite recursion guard to work on the current chain of includes instead of a list of total encountered included files
This fixes the odd edge case of having a common utility file included in multiple separate files that are then included in a main file causing the type search to quit with a StopLookupException even if it's not actually an infinite recursion.

[FalsePattern]

Any progress on this?

[FalsePattern]

Additional changes by @drouarb:

• Support for sodium #import <sodium:include/fog.glsl> statement
  • Resolve path properly inside the mod
  • Able to search dependency mods
• Making #import and #include clickable reference
• Support for NV_gpu_shader5 pointers uint *data;
• Fix bool assignements such as bool a = true==true;