Code published on Mautic Github

[froger]

My actions:

• [x] The code should be available on github
• [x] Github actions to release docker images
• [x] Bind used images in infra to the one released by dockerhub

[RCheesley]

I've set it up on Dockerhub now and set up auto-builds with these settings - LMK if it needs tweaking!

[RCheesley]

@froger I've made you an admin on the repo and @rsdeus is a maintainer so you should be able to set up any automation wizardry that might be needed 🧙 🪄 ✨