fix: add package script to check for empty string

scripts/add-package.bash

@@ -1,6 +1,11 @@
 #!/usr/bin/env bash
 cd ~/Code/dotfiles
 
+if [ -z  $@ ]; then
+    echo "You must provide a package name."
+    exit 1
+fi
+
 echo "metapac add --backend arch --package $@"
 metapac add --backend arch --package $@
 
@@ -8,6 +13,8 @@ rsync -av ~/.config/metapac .config --delete
 
 metapac sync
 
+echo "Adding package to git..."
+
 git add .config/metapac
 git commit -m "add-package: $@"
 git push