chore: add ts configuration

[dcoa]

Description:

The current PR extends the Babel configuration to support .ts during code transpilation.

What was changed:

• Added @babel/preset-typescript to the Babel config so it can strip types and transpile TS to JS
• Added --extensions '.js,.jsx,.ts,.tsx' to the build command so Babel processes TS files
• Added cleanup for .test.ts files in dist (alongside the existing .test.js cleanup)
• Added tsconfig.json extending @edx/typescript-config for run test in ts

What the PR does not do:

• Migrate current code to ts

Merge checklist:

• Consider running your code modifications in the included example app within frontend-platform. This can be done by running npm start and opening http://local.openedx.io:8080.
• Consider testing your code modifications in another local micro-frontend using local aliases configured via the module.config.js file in frontend-build.
• Verify your commit title/body conforms to the conventional commits format (e.g., fix, feat) and is appropriate for your code change. Consider whether your code is a breaking change, and modify your commit accordingly.

Post merge:

• After the build finishes for the merged commit, verify the new release has been pushed to NPM.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.13%. Comparing base (1c02a0f) to head (811400d).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #868   +/-   ##
=======================================
  Coverage   87.13%   87.13%           
=======================================
  Files          48       48           
  Lines        1407     1407           
  Branches      297      297           
=======================================
  Hits         1226     1226           
  Misses        168      168           
  Partials       13       13           

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