feat(modules): New entrypoints:found hook

[aklinker1]

This closes #937.

wxt.hooks.hook("entrypoints:found", (_, paths) => {
  paths.push("src/entrypoints/content-scripts/google/some-script.content.ts");
  paths.push("src/entrypoints/content-scripts/google/another-script.content/index.ts");
});

Or use a glob pattern:

import glob from 'fast-glob';

wxt.hooks.hook("entrypoints:found", async (_, paths) => {
  const customEntrypoints = awit glob([
    "src/entrypoints/**/*.content.ts",
    "src/entrypoints/**/*.content/index.ts"
  ]);
  paths.push(...customEntrypoints);
});

[netlify]

❌ Deploy Preview for creative-fairy-df92c4 failed.

Name	Link
🔨 Latest commit	4e9246b
🔍 Latest deploy log	https://app.netlify.com/sites/creative-fairy-df92c4/deploys/66d7467bc9541e000824905f

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.77%. Comparing base (87fbb1f) to head (4e9246b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #967      +/-   ##
==========================================
- Coverage   81.90%   81.77%   -0.14%     
==========================================
  Files         125      125              
  Lines        6605     6605              
  Branches     1100     1100              
==========================================
- Hits         5410     5401       -9     
- Misses       1181     1190       +9     
  Partials       14       14              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[aklinker1]

Hmm, yeah, so this just is not going to work without a more sophisticated algorithm for detecting folders vs single file entrypoints.

For example, because I had to switch to using absolute paths, entrypoints/popup/index.html would be matched as the popup entrypoint correctly, but entrypoints/popup/main.ts get matched as an unlisted script. There isn't a simple and easy way to tell these apart. You could ignore any files inside a folder with index.html or index.ts file, but then we'd be hiding warnings that make it easy to know why a file isn't being built as an entrypoint.

I could write a even more complex solution that works nicely for all cases... but I don't think this issue is worth the effort. Just use the standardized project layout. That's what opinionated frameworks are all about.

So I'm gonna close this PR, and suggest a different solution on #937