Addon Test: Refactor test addon to include stories automatically

[yannbf]

Closes #

What I did

This PR introduces a change in the Vitest plugin where it leverages the stories field of main.js to transform into an array of globs for vitest, and adds that automatically as config.test.include.

I tested this locally in the monorepo's Storybook and it worked without issues. Adding extra include or exclude paths in the vitest config will work as expected.

Things to note/discuss:

1. Storybook's internal glob matching mechanism (picomatch) might not be the same as Vitest, so not all types of glob users use might be compatible.
2. What do we do with globs that include mdx? Do we just filter them out? But what about single, complex globs that try to include everything, including mdx? if we just filtered them, we would be filtering stories as well. In such cases we'd have to manipulate the globs instead. The fact we are not filtering MDX is what is causing the unit tests to fail in this PR
3. The story globs calculation needs to assume a working directory, which might be incorrect in monorepos or other cases. The solution might be too naive right now

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

This section is mandatory for all contributions. If you believe no manual test is necessary, please state so explicitly. Thanks!

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook canary-release-pr.yml --field pr=<PR_NUMBER>

name	before	after	diff	z	%
createSize	0 B	0 B	0 B	-	-
generateSize	78.7 MB	78.7 MB	2.56 kB	0.54	0%
initSize	147 MB	147 MB	5.5 kB	-0.73	0%
diffSize	68.3 MB	68.3 MB	2.94 kB	-0.73	0%
buildSize	7.1 MB	7.1 MB	0 B	-0.49	0%
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buildStaticSize	0 B	0 B	0 B	-	-
buildPrebuildSize	4.1 MB	4.1 MB	0 B	-0.54	0%
buildPreviewSize	3 MB	3 MB	0 B	0.74	0%
testBuildSize	0 B	0 B	0 B	-	-
testBuildSbAddonsSize	0 B	0 B	0 B	-	-
testBuildSbCommonSize	0 B	0 B	0 B	-	-
testBuildSbManagerSize	0 B	0 B	0 B	-	-
testBuildSbPreviewSize	0 B	0 B	0 B	-	-
testBuildStaticSize	0 B	0 B	0 B	-	-
testBuildPrebuildSize	0 B	0 B	0 B	-	-
testBuildPreviewSize	0 B	0 B	0 B	-	-

name	before	after	diff	z	%
createTime	22.6s	5.9s	-16s -689ms	-1.49	🔰-281.4%
generateTime	18.3s	19.9s	1.6s	-0.66	8.1%
initTime	11.8s	13.8s	2s	-0.76	14.6%
buildTime	10.5s	7.9s	-2s -585ms	-1.38	🔰-32.5%
testBuildTime	0ms	0ms	0ms	-	-
devPreviewResponsive	5.5s	6.5s	998ms	0.35	15.1%
devManagerResponsive	3.7s	4.2s	510ms	0.31	11.9%
devManagerHeaderVisible	561ms	634ms	73ms	0.75	11.5%
devManagerIndexVisible	589ms	677ms	88ms	0.89	13%
devStoryVisibleUncached	911ms	1.1s	252ms	0.61	21.7%
devStoryVisible	587ms	676ms	89ms	0.88	13.2%
devAutodocsVisible	510ms	627ms	117ms	1.36	🔺18.7%
devMDXVisible	556ms	540ms	-16ms	0.19	-3%
buildManagerHeaderVisible	516ms	583ms	67ms	0.04	11.5%
buildManagerIndexVisible	588ms	616ms	28ms	0.11	4.5%
buildStoryVisible	589ms	617ms	28ms	-0.13	4.5%
buildAutodocsVisible	524ms	572ms	48ms	0.79	8.4%
buildMDXVisible	496ms	585ms	89ms	0.5	15.2%

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