Refactor pre-commit hooks to use prek (#976)

* ci: change to prek for pre-commit

* refactor: fix shellcheck warnings for the scripts

* chore: unify whitespace formatting

* nix: add prek to dev shell

quickshell/Modules/DankDash/OverviewTab.qml

@@ -73,4 +73,4 @@ Item {
             onClicked: root.switchToMediaTab()
         }
     }
-}
+}