TS conversion

[Windvis]

This converts the code to TS and export the template registry and signatures.

TODO:

• type refactoring
• convert the tests + strict mode tests
• figure out why the nice exports in the index.ts file cause the build to fail. -> importing with file extensions fixed it
• Find out why we can't use the "nice" import in a .gts test in the test-app. -> ember-template-imports v4 issue, should we mention this in the readme?
  • Discord discussion
  • Follow up discussion links to this issue: Setting enableTypeScriptTransform to true breaks imports in .gjs tests ember-cli/ember-template-imports#228

Supersedes #28

[Windvis]

I totally forgot about this.. I'm not sure what the blocker was, I'll try to pick it up again soon.