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fixes #1083 (there was a chance an encrypted KEY1 command could be interpreted as something else and fuck things up)

Turns out my system was affected by a bug with modifier remapping in
macOS causing some of my left/right modifiers to be swapped. This commit
fixes them to be the correct values.

complete cart-interface refactor, will make this code a lot easier to deal with

Co-authored-by: WaluigiWare64 <68647953+WaluigiWare64@users.noreply.github.com>

* pre-11.0 sed doesn't seem to understand \t so use a literal tab
* don't fail if we run the script on a package with libs already bundled
* delete header files in the bundled frameworks to save space