Fix repo lint for path arguments

Propagate the CocoaPods version to the prepare_command

Move the case statement to the top of the file, where we set "TARGET_DEVICE_ARGS" so it's available to all scripts, and add it to the `ibtool` storyboard processing step.

[ISSUE_TEMPLATE] Initial proposal

Improve de-duplication for non-trivial cases

Some of these might not actually return nothing, but none of these methods give a guarantee to return a certain result.

Reduces code complexity a bit.

Eventhough this complicates the algorithm, this is supposed to make the generated labels overall more intuitive and consistent in face of changes to declared dependencies.