Add dprint fixer

[myobie]

This is attempt number 3. See https://github.com/dense-analysis/ale/pulls?q=is%3Apr+is%3Aclosed+dprint

I have changed to use stdin. This is working well for me so far 💪

[myobie]

@hsanson sorry for noise in this PR (I had to get docker installed locally so I could run the tests). It's now ready to go. The problem I couldn't figure out was that, of course, dprint is not installed inside the test docker container. I added some extra tests and I feel good about how they look. Thanks for your patience.

[hsanson]

Looking good, thanks for the work. Would be great if you can add also help documentation to the PR:

• Add ale-dprint-options section into ale.txt explaining the possible configuration variables.
• Add ale-javascript-dprint section to ale-javascript.txt which points to ale-dprint-options. See ale-javascript-deno and ale-javascript-cspell for example.
• Repeat for every language supported by dprint (e.g. typescript, json, and markdown).

[myobie]

Thank you for your help getting this PR into shape. I've added all the languages which dprint supports with their wasm plugins. There are some process plugins, but they have a warning on their website and I think they are new. I'll revisit the ale docs in the future once I see how those non-wasm plugins turn out.

Also related: dprint/plugins#6

[hsanson]

Thanks for the extensive documentation. Just one small detail and this should be ready to merge.

[hsanson]

Thanks, good contribution and well documented.