feat: override shortcuts

[manniL]

Resolves #555

This PR alters the shortcut setup so that users can change the default shortcuts via defineShortcutsSetup, e.g. removing some or disabling all of them.

[manniL]

Okay, I've changed the implementation and passed the default shortcuts to the setupShortcuts function accordingly so users can manipulate them.

Because injections only allow a single argument though, I had to change the signature of a the method which would lead to a breaking change.
To avoid that, having an option for another two argument would be nicer.

Also I was thinking of giving the default shortcuts string identifiers or similar so it'd be easier to disable only a few of them without relying on e.g. array positions

[manniL]

Nevermind, I altered the injection algorithm for unlimited arguments now 😋