Add lib script, rocky and almalinux support

[Linux123123]

WIP, not sure how #280 PR will adapt / be merged.

Currently panel.sh has been tested in Ubuntu 20.04 and is at least partially working.

I moved a lot of redundant logic from scripts to lib, so I may have forgotten about something. My goal is to unify as much as possible all the scripts to have the same functions available to minimize overlap.

• panel
• wings

[Linux123123]

@vilhelmprytz the installers/panel.sh and ui/panel.sh are working (at least on ubuntu jammy) and should be ready for review. I want your opinion before I fully start working on wings part to know what is right and what is wrong.

Ignore the failed builds

[vilhelmprytz]

Initial read-through: this looks very promising, nice work @Linux123123! It looks like you've done some work on Wings as well already, would it be suitable if I merged this into a new branch and continued your work on it? If so, would you be able to resolve the current conflicts with master?

[Linux123123]

Initial read-through: this looks very promising, nice work @Linux123123! It looks like you've done some work on Wings as well already, would it be suitable if I merged this into a new branch and continued your work on it? If so, would you be able to resolve the current conflicts with master?

I think I have the merge conflicts solved locally already, but yes we can continue on a new branch.

[Linux123123]

For now, I will leave the let's encrypt logic separate in panel and wings, as one is using nginx and the other one the standalone option in certbot. Maybe could be unified down the line.

[Linux123123]

Now to check for the millions of bugs introduced in this PR…

I will mark it as ready for review as in vagrant on Ubuntu jammy I can run both panel and wings scripts without any major issues.

But still need to test other distros.

[vilhelmprytz]

Thanks for this, I'll merge into a new branch (major-refactor) and continue work there.