ci: Add missing on workflow_call trigger (#49)

Author: vdusek

.github/workflows/run_code_checks.yaml

@@ -16,6 +16,9 @@ on:
   # It should also be possible to trigger checks manually
   workflow_dispatch:
 
+  # Allow this workflow to be invoked as a reusable workflow from other workflows
+  workflow_call:
+
 jobs:
   lint_check:
     name: Lint check