chore: use parse & print from svelte/compiler

[manuel3108]

This is basically #568 but with a proper pr description and re-implemented from scratch, as the other branch was horribly out of date.

Closes #94
Closes svelte-add/svelte-add#193
Closes svelte-add/svelte-add#507

Relates sveltejs/svelte#16188

This pr is based on #620, since svelte alreday uses esrap@2

Step 1 (support for svelte files):

• support for svelte specifc html syntax (@attach, self closing component tags, transitions, etc) (NOTE: referenced svelte pr was last updated in june, everything that got released after that is not going to work right now)
• check and adapt all other usages of parseSvelte (approximately 10 occurences)
• make generated code from print more readable, probably needs to be done in feat: add print(...) function svelte#16188

Step 2 (reduce deps, different pr probably)

• we currently use many different libraries for parsing and serializing JS / CSS / HTML. All of that could in theory be handled by svelte/compiler. Check which hoops we need to jump to make that happen. We could potentially drop the following deps:
  • dom-serializer
  • domhandler
  • domutils
  • htmlparser2
  • postcss

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