Quest: add support to popular third-party editor extensions

In order to get top notch editor support like developers expect, third party extensions also need to be taken into account. Because `glimmer-js` and `glimmer-ts` are registered as two new language ids with their own respective file extension, most editor extensions will not run on these by default.

Here is a list of popular editor extensions that currently don't work out of the box with `.gjs` and `.gts`. This list is by no means exhaustive, so feel free to submit any others.

## VS Code

- [x] [TailwindCSS Intellisense](https://github.com/tailwindlabs/tailwindcss-intellisense)
- PR: https://github.com/tailwindlabs/tailwindcss-intellisense/pull/867
- [x] [Pretty TS Errors](https://github.com/yoavbls/pretty-ts-errors)
- PR: https://github.com/yoavbls/pretty-ts-errors/pull/85
- [ ] [Import Cost](https://github.com/wix/import-cost)
- PR: https://github.com/wix/import-cost/pull/320
- [ ] [a18y-ally](https://github.com/lokalise/i18n-ally)
- PR: https://github.com/lokalise/i18n-ally/pull/1113
- [ ] Auto rename HTML tags via `editor.linkedEditing`
- [x] PandaCSS
- PR: https://github.com/chakra-ui/panda-vscode/pull/43

## Stand-alone

- [x] [Tokei](https://github.com/XAMPPRocky/tokei)
- PR: https://github.com/XAMPPRocky/tokei/pull/1052