Use of FlyCI runners

[rozyczko]

We are currently using the Starter plan on FlyCI, for M2 builds.
This plan gives us 500 minutes per month free and $0.06 per minute thereafter for projects within EasyScience organization.

We are allowed to run 5 concurrent jobs, which should be enough for our projects, at least for a while.

However, we should limit the usage of flyci-macos-14-m2 runners to cases where it is necessary.

The cases include:

• Debugging a build for compatibility/bug fixes
• Pull requests to develop and to master
• Releases from master

Any other cases we should thing about?

[rozyczko]

Currently, Github allows M1 jobs natively. No more reasons to use FlyCI

[rozyczko]

BUT the GH M1 runners need to be tested with a compiled project to assure we don't need the M2 runners from FlyCI