Implement CI/CD

[hhamud]

Implement proper public continuous integration and testing. Github has been deemed unreliable so alternatives are required.

One idea is to use gitea and self-host since cass already handles the release on a dedicated mac mini.

[blacks1ne]

Good idea.

Prerequisites that I see are as follows:

1. We should first define the compilation approach: all-Docker vs the linux/amd64/arm64-Docker + native darwin/arm64). We can also start with AS IS and consider moving to a different approach later. (discussed in Remove native builds #503 )
2. We should fix all tests as in my last testing done around a month ago almost every module's tests had bugs preventing the test completion.
   I tried fixing pebble module tests in Upgrade pebble dependencies and fix tests #481 , but then @CassOnMars did migration to the next major pebble version. I am not sure if tests were fixed upon that change. I did not have time to work on the other modules because of 3.
3. In terms of priorities I would prioritize making mainnet operational first.