chore(git): clean up .gitignore files

[sigveio]

Description

This pull request aims to re-organise the projects .gitignore to help keep it clean, and to add various common editor generated folders/files to the list. It also removes some redundant lines from the site/docusaurus .gitignore, which are covered by the root.

The pattern *.bundle.js is also deleted.
(From what I could gather this was added ~5 years ago for a compiler that is now deprecated and no longer used)

Motivation / Context

I generated a .vscode/launch.json file for the vscode debugger while working on a PR, and thought it would be practical for developers to avoid having to stash or delete these types of files between commits. So I wanted to suggest adding common ignores for the most popular IDEs. Which seemed like a good opportunity for some housekeeping =)

[codecov-commenter]

Codecov Report

Merging #1156 (ba5f721) into master (095f901) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1156   +/-   ##
=======================================
  Coverage   96.53%   96.53%           
=======================================
  Files         114      114           
  Lines        3582     3582           
  Branches     1052     1052           
=======================================
  Hits         3458     3458           
  Misses        115      115           
  Partials        9        9           

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[ludofischer]

Did you gather the list from somewhere or is it based on your own usage only?

[sigveio]

Did you gather the list from somewhere or is it based on your own usage only?

I boiled it together from a combination of my own standard .gitignore / dotfiles and the existing ones in this project. I can't recall where I originally gathered these code editor related extensions from - some are from own usage, and some probably inspired from other .gitignores I have come across.