[CSG]: Renderer overhaul & fixes

[Cloud7050]

This fourth CSG PR focuses on the module's renderer and its related systems. It brings improvements (including to performance) while fixing some bugs.

The main changes include:

• Overhauling the renderer as a stateful renderer class, in anticipation for multi-canvas support. Each renderer now has its own camera & controls state composed among/within other newly added systems
• Properly managing and recovering from WebGL context loss. The renderer is able to start, pause, resume, and stop as needed. The user is informed elegantly while waiting for the browser to restore the context
• Fixing simultaneous animation loops. Frame requests are now properly cancelled the moment the component unmounts
• Boosting performance. Frames are only requested when the content expected to be depicted changes (essentially from user control input), or to put content back on a dead canvas. The JSCAD libraries have been updated which also brings some optimisations
• Fixing pointer movements being ignored in certain situations
• Tracking and removing various canvas listeners when appropriate
• Handling reported linter problems, and cleaning up many ESLint, Prettier & TS comments throughout the repo given the merging of the updated linter config & other big PRs
• Enhanced logging to track & detect problems with the renderer
• Misc refactoring, code tidying & other smaller changes

Subsequent PRs are still planned. The next will likely be about the new Scenes system

[Anonymxtrix]

LGTM! Thanks a lot for helping to fix the problems :)