validateCode and formatCode helpers

[mkurz]

Does not have validateCode (and therefore also no formatCode)

That might also mean these repos do not even pull in scalafmt.

• https://github.com/playframework/interplay
• https://github.com/playframework/omnidoc
• https://github.com/playframework/play-grpc
• https://github.com/playframework/play-slick
• https://github.com/playframework/playframework.com (But has it commented out in .github/workflows/build-test.yml)
• https://github.com/playframework/play-mailer (But has it commented out in .github/workflows/build-test.yml)
• https://github.com/playframework/play-webgoat

These I am not sure about because they are seed projects. We can add formatting but I don't think scalafmt should be included when running sbt new ...

• https://github.com/playframework/play-java-seed.g8
• https://github.com/playframework/play-scala-seed.g8

In play-samples sbt <command> will not work, because in this repo is the mothership for a lot of projects.
We probably would need something like the test.sh script which goes into each project, and runs the sbt command (like validateCode.sh and formatCode.sh:

• https://github.com/playframework/play-samples (But has it commented out in .github/workflows/build-test.yml)

Has validateCode but no formatCode

• https://github.com/playframework/anorm
• https://github.com/playframework/cachecontrol
  🔄 Synced file(s) with playframework/.github cachecontrol#245
• https://github.com/playframework/play-doc
• https://github.com/playframework/play-ebean
  🔄 synced file(s) with playframework/.github play-ebean#370
• https://github.com/playframework/play-file-watch
• https://github.com/playframework/play-json
• https://github.com/playframework/play-soap
  🔄 Synced file(s) with playframework/.github play-soap#328
• https://github.com/playframework/play-socket.io
• https://github.com/playframework/play-ws
• https://github.com/playframework/scalatestplus-play
• https://github.com/playframework/twirl

[mkurz]

@ihostage Look at playframework/playframework#11513, I tried to come up with a solution how we can sync the same files everywhere and using sys properties as for a repo's special needs. What do you think?