Move release workflow to GitHub Actions

[jansorg]

Closes https://github.com/getappmap/appmap-intellij-plugin/issues/638 IMHO this should only be merged after urgent releases have been made.

This is supposed to replace the remaining Travis CI workflow with an equivalent GitHub Actions workflow. I haven't tested this yet because I didn't want to merge and trigger a release.

Possible differences:

• This workflow is triggered by changes to main. But the Travis workflow had if: type != push OR branch = main OR branch =~ /^v\d+\.\d+(\.\d+)?(-\S*)?$/ but apparently still always executed on main:

  deploy:
  - provider: script
  script: semantic-release --debug
  on:
    branch: main

[github-actions[bot]]

AppMap runtime code review

Summary	Status
Failed tests	:white_check_mark: All tests passed
API changes	:zero: No API changes
Security flaws	:white_check_mark: None detected
Performance problems	:white_check_mark: None detected
Code anti-patterns	:white_check_mark: None detected
New AppMaps	:star: 1 new junit test

⭐ New AppMaps

[junit] App map file lookup scoped locate filename by index from plugin-core/src/test/java/appland/files/AppMapFileLookupTest.java:36