improve dependency management

[Maks-s]

This PR seeks to improve how dependencies are managed :

• [x] use only import_map.json to list remote URLs
  • [x] remove server/deps.ts
  • [x] remove common/deps.ts
  • [x] remove test_deps.ts
  • [x] remove per-file imports
  • [x] remove web/deps.ts
• [x] plug_api/ shouldn't contain imports using import_map.json, as it can be imported by remote plugs and should therefore use deps.ts (see Import Maps are for Applications)
• [x] lib/ should also not contain import_map.json stuff, for the same reasons as the last entry
• [x] merge lib/deps.ts and plug_api/deps.ts to make only a single deps.ts file

If you feel this is unnecessary, feel free to decline this PR :+1:

[zefhemel]

Yes, thank you for thinking about this and doing this work. I'll look at the details, but I like the general direction. Let me know when you think it's ready to merge.

[zefhemel]

There was a merge conflict with main that I tried to resolve.

When I run this in Firefox things seem to run fine (update: actually only when loading this via localhost not 127.0.0.1), but for whatever in Chrome(like) browsers as well as Safari I see this:

I suspect that a weird import happens somewhere (in the service worker now?) that imports a Deno library that shouldn't be imported... Do you see this too?

[Maks-s]

Thanks for the merge conflict fix

Shoots, I missed that! I'll fix this when I've got some time

[zefhemel]

Ok, this seems to work now. Merging, thanks a lot for this effort!