* Add a new hello world plugin and adjust the welcome message. (#107789)
* 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
# Conflicts:
# .github/CODEOWNERS
* Update tsconfig.json
Need to account for https://github.com/elastic/kibana/pull/108139
* Update tsconfig.json
Needed to add references