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/DankBar/Widgets/ClipboardButton.qml

@@ -22,4 +22,4 @@ BasePill {
             }
         }
     }
-}
+}

quickshell/Modules/DankBar/Widgets/NotepadButton.qml

@@ -60,4 +60,4 @@ BasePill {
             }
         }
     }
-}
+}

quickshell/Modules/DankBar/Widgets/PowerMenuButton.qml

@@ -21,4 +21,4 @@ BasePill {
             }
         }
     }
-}
+}