Share utilities between features

[phorcys420]

There should be a shared library between features that contains the following :

• check_packages
• A function to get a GH release link based on tag or get latest (like what's done in the Ghidra feature)

There is currently a proposal for sharing code between features but we would need something else in the mean time.

We can either download the library from the feature's script via curl and pin it using the commit ID but that's not great.
I think a better thing would be to have another feature that only serves as a library and then loading it via dependsOn in each separate feature.

[phorcys420]

done in the following PRs :

• feat: add lib-common feature #10
• feat: add lib-github feature #12
• feat: move features to libraries #14