Improve Deno templates

[devmattrick]

This includes a couple of improvements for the Deno templates:

• Add .vite to the generated .gitignore file in order to prevent pushing Vite's temp directory to repo
• Change the triple slash reference types in vite-env.d.ts to use the npm: import specifier

I tried using import maps for the latter but it doesn't seem to work (potentially related bug here: denoland/deno#13009). Let me know if you'd like any changes to be made, thanks!

[bluwy]

Thanks! The first change make sense to me. I'm not so sure about the second one though, how are you configuring the Deno extension in your IDE locally? I never quite understood the right configuration, but presumably it only has to check the vite.config.mts file 🤔

[devmattrick]

Hmm that's a good point. I had my IDE setup to just enable Deno for the whole workspace, but I guess Vite doesn't do Deno-style module resolution? Or I'm honestly not entirely sure how that works...

[bluwy]

Yeah. If I enable Deno entirely, I'm getting a lot of resolution errors for files that Vite processes. In VSCode, I setup the settings with deno.enablePaths: ['./vite.config.mts'] (not sure if this is recommended).

Maybe we can remove that change for now, and keep the .vite gitignore change. In a later PR we can add some default configs for the Deno extension.

[devmattrick]

Sounds good! Done.