fix: add script to remove Plasma keyboard shortcuts

contrib/remove_keyboard_shortcuts.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+# SPDX-FileCopyrightText: 2021 Nicolas Vaughan <[email protected]>
+#
+# SPDX-License-Identifier: CC-BY-NC-4.0
+
+read -r -p "Do you want to remove Bitmuth's keyboard shortcuts? [Y/n] " response
+response=${response,,} # tolower
+if [[ $response =~ ^(yes|y| ) ]] || [[ -z $response ]]; then
+  sed -i -r 's/^bismuth.+//g' ~/.config/kglobalshortcutsrc
+  # remove the multiple newlines left by sed
+  sed -i -r ':a;N;$!ba;s/\n{3,}/\n\n/g' ~/.config/kglobalshortcutsrc
+fi