Deploy images on commits on develop

[vincentbrison]

This would involve a new dedicated github action workflow, which would trigger build / test / deploy images on DockerHub. @sjcqs Do you have any idea how we should tag those images?

We should investigate how to add deploy capacity to ci.sh. It would probably involve secrets stored on github, for a dockerhub user / token.

[sjcqs]

Maybe we should deploy snapshots version of the develop branch and real release version of the master branch.

[sjcqs]

Images from the master branch would be android-xx and from the develop branch android-xx-snapshot

[sjcqs]

We could also version the images, but this would require to either add manual tag to release a version (or use github version) or add sementic in the commit title/description (bugfix, feature, BREAKING CHANGE) to auto-compute the version name.

[vincentbrison]

So image names may look like this:
fabernovel/android:api-29-latest (updated by any push on master)
fabernovel/android:api-29-v1.0.0 (semantic versioning for release through tag)
fabernovel/android:api-29-snapshot (uploaded by any push on develop)

What do you think about that?