- Make sure we still always type check using `tsgo --noEmit`
- Align names of esbuild files
- Convert all esbuild files to typescript. We use the `.mts` extension to avoid annoying node warnings about using pacakges
For #271167
This makes it so our built-in extensions can mostly be built using `tsc` on the command line. Previously the extensions were picking up a lot of typing info from the root `node_modules` that meant they weren't truly independent
* feat: Add the logo of the built-in extension
* chore(extension): add compressed icon
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Co-authored-by: Martin Aeschlimann <martinae@microsoft.com>