chore(vitest): add vitest 2 browser beta test

[userquin]

This is just a test using Vitest beta v2.0 packages to run the new added test in the browser: src/components/TresCanvas.test.ts cloned from my previous branch (https://github.com/Tresjs/tres/blob/userquin/feat-vitest-browser/src/components/TresCanvas.test.ts).

To run the browser test:

• pnpm install && pnpm build from root folder
• pnpm test:browser:none from root

We can also use webdriverio or playwright, you need to add the corresponding dependencies as dev dependencies and run:

• pnpm test:browser:webdriverio from root or
• pnpm test:browser:playwright from root

This PR using vitest packages from local tgz from this PR: vitest-dev/vitest#5815

✔️ DONE: Once we released a new beta version we can use vitest from npm registry.

For CI, we need to include webdriverio or playwright and configure headless to true.

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[userquin]

Once the browser finish running the tests, run the TresCanvas test to see the UI:

[andretchen0]

e2e tests would be a big help. Looking forward to this.

[userquin]

@andretchen0 we need to cover e2e tests, we have some internal team discussion about it, stay tuned

[userquin]

Here a repository with advanced manual and on demand examples in the playground: https://github.com/userquin/tresjs-vitest-browser-tests

Can also run in StackBlitz, link in the readme file.

[alvarosabu]

@userquin, what would you like to do with this one? still makes sense?