nixos/chromium: add enablePlasmaBrowserIntegration option

[SuperSandro2000]

Description of changes

Closes #85342

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.05 Release Notes (or backporting 22.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

[SuperSandro2000]

@K900 can you have look?

[K900]

The Plasma bits look OK, not sure about the Chromium bits. Also, it might be time to add some sort of centralized option for native messaging hosts...

[SuperSandro2000]

Yeah, the current way does not scale but I am not planning do that right now due to the lack of time.

[NovaViper]

Hey could you also add support for Vivaldi? It too is based on Chromium and has a specific path for the native host messaging host like how Brave does

[SuperSandro2000]

I don't use vivaldi and don't have the time to verify them. Please create a separate PR.

---

@K900 so what do we do about this?

[SuperSandro2000]

Updated to work with Plasma 6 from #286522

[yisraeldov]

It would probably be better if the formatting was done in a spearate PR, makes it hard to see what was changed.

[pbsds]

had to review commit-by-commit, but the diff LGTM

[SuperSandro2000]

It would probably be better if the formatting was done in a spearate PR, makes it hard to see what was changed.

I can move it to an extra commit but doing in a separate PR is way to much hassle.

[pbsds]

@ofborg test chromium

[pbsds]

aarch64-linux failed (timeout?) building chromium, LGTM