[0.15] ci: Add workflow for unit tests

[deepjyoti30-st]

Summary of change

This PR adds a github workflow for running the unit-tests with various triggers (including when a PR is opened).

Related issues

Test Plan

All tests should pass.

Documentation changes

(If relevant, please create a PR in our docs repo, or create a checklist here highlighting the necessary changes)

Checklist for important updates

• Changelog has been updated
• frontendDriverInterfaceSupported.json file has been updated (if needed)
  • Along with the associated array in lib/ts/version.ts
• webJsInterfaceSupported.json file has been updated (if needed)
• Changes to the version if needed
  • In package.json
  • In package-lock.json
  • In lib/ts/version.ts
• Had run npm run build-pretty
• Had installed and ran the pre-commit hook
• Issue this PR against the latest non released version branch.
  • To know which one it is, run find the latest released tag (git tag) in the format vX.Y.Z, and then find the latest branch (git branch --all) whose X.Y is greater than the latest released tag.
  • If no such branch exists, then create one from the latest released branch.

[promptless]

✅ No documentation updates required.

[github-actions]

size-limit report 📦

Path	Size
lib/build/index.js	27.32 KB (0%)
recipe/emailverification/index.js	27.67 KB (0%)
recipe/emailpassword/index.js	27.63 KB (0%)
recipe/thirdparty/index.js	28.41 KB (0%)
recipe/session/index.js	24.47 KB (0%)
recipe/passwordless/index.js	28.69 KB (0%)
recipe/userroles/index.js	24.74 KB (0%)
recipe/multitenancy/index.js	27.06 KB (0%)
recipe/multifactorauth/index.js	27.15 KB (0%)
recipe/totp/index.js	26.89 KB (0%)
recipe/oauth2provider/index.js	27.44 KB (0%)
recipe/webauthn/index.js	31.32 KB (0%)