I had experimented with turning this off in order to improve test performance, and apparently that ended up being merged. Now if we're to do component testing, we'll be changing things globally on the document, so isolation is very much necessary.
* Fix coverage reporting
Codecov hasn't been working recently because Vitest doesn't report coverage by default.
* Suppress some noisy log lines
Closes https://github.com/element-hq/element-call/issues/686
* Store test files alongside source files
This way we benefit from not having to maintain the same directory structure twice, and our linters etc. will actually lint test files by default.
* Stop using Vitest globals
Vitest provides globals primarily to make the transition from Jest more smooth. But importing its functions explicitly is considered a better pattern, and we have so few tests right now that it's trivial to migrate them all.
* Remove Storybook directory
We no longer use Storybook.
* Configure Codecov
Add a coverage gate for all new changes and disable its comments.
* upgrade vitest
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Co-authored-by: Timo <toger5@hotmail.de>
