feat(lang-ts): support lang="ts" in <style> and <custom> blocks

[Tahul]

Resolvs #207 ;

This PR is still work in progress.

It currently:

• Adds a fixture for expected working setup
• Adds two tests for expected working outputs
• Begins implementation by:
  • Change filtering of nodes in ast-utils to cast lang="ts" blocks as <script> elements
  • Change getScriptSetupModuleCodeBlocks, parseScriptSetupElements and parseAsSFC implementation to support scriptElements instead of scriptElement

Any idea or suggestion for next steps is welcome :)

[Tahul]

Here is a little snippet of current status:

CleanShot.2023-09-13.at.17.46.44.mp4

[Tahul]

The CI failing seem to be caused by this:

node_modules/@typescript-eslint/typescript-estree/dist/ts-estree/estree-to-ts-node-types.d.ts:60:44 - error TS2694: Namespace 'ts' has no exported member 'JsxNamespacedName'.

That seem to be due to the fact this repository does not use a lockfile and so it is impossible for me to know which exact version of this dependency is used to run the tests.

[ota-meshi]

Thank you!
I will change the tsconfig.json to avoid the error in CI. #209