fix(package): prints error during delete when no packages found

This commit fixes the bug in the rio package delete command when no
packages are found and the command prints "Nothing to delete" and returns
a zero exit code. While this was mostly okay, it's not script friendly
or automation friendly. This commit fixes the bug.

riocli/package/delete.py

@@ -62,9 +62,9 @@ def delete_package(
         raise SystemExit(1) from e
 
     if not packages:
-        spinner.text = "Nothing to delete"
-        spinner.green.ok(Symbols.SUCCESS)
-        return
+        spinner.text = click.style("Package(s) not found", Colors.RED)
+        spinner.red.fail(Symbols.ERROR)
+        raise SystemExit(1)
 
     with spinner.hidden():
         print_packages_for_confirmation(packages)