* replace Travis with GitHub Actions workflow
* fix prettier on Windows
* remove PascalCasing bash one-liner for one use case
* use mkdirp to workaround Windows
* cache tweaks
* move s3 deploy to own workflow
* upload artifacts for debug
* path tweak
* debug
* apollo:codegen without folder pre-creation
* debug: activate s3 deploy for all branches
* pass env vars to deployment build
* more env var passing
* deploy main branch pushes only
Matthias Kretschmann