Adding choose-shell script

.local/bin/choose-shell

@@ -17,6 +17,7 @@ print_info "Choose your user's default shell:"
 echo "1. /bin/bash"
 echo "2. /bin/fish"
 echo "3. /bin/zsh"
+echo "4. quit"
 
 read -p "Enter the number of your preferred shell: " choice
 
@@ -39,6 +40,10 @@ log back in for change to take effect."
     printf '%s' "If default shell was changed, you will need to logout and 
 log back in fo\nr change to take effect."
     ;;
+  4)
+    echo "User has chosen to quit program."
+    exit 1
+    ;;
   *)
     echo "Invalid choice. Please try again."
     exit 1