* [build_ts_refs] improve caches, allow building a subset of projects
* cleanup project def script and update refs in type check script
* rename browser_bazel config to avoid kebab-case
* remove execInProjects() helper
* list references for tsconfig.types.json for api-extractor workload
* disable composite features of tsconfig.types.json for api-extractor
* set declaration: true to avoid weird debug error
* fix jest tests
Co-authored-by: spalger <spalger@users.noreply.github.com>
* Add a new hello world plugin and adjust the welcome message.
* update and move files
* Update CODEOWNERS
* add a tsconfig.json file
* update tsconfig.json
* fix type check
* address code review comments
