Migrate from Travis to Github Actions

[bjornarjatten]

• [x] Build
• [x] Test
• [x] Sonnarscanner
• [x] Docker
• [x] Deploy
• [x] Release

[bjornarjatten]

Migration is now done, and it is semi-working. We still need to look into:

• [x] naming convention working as expected
• [x] speed it up
• [x] create workflows for branches