Initial commit: omp-security DSH plugin (oh-my-pi port) with docs and tests

cordis.patch.yml

@@ -0,0 +1,9 @@
+- insert:
+    - id: omp-security
+      name: '@local/omp-security'
+      config:
+        aiReview: true
+        # empty = use the calling agent's provider/model
+        reviewProvider: ''
+        reviewModel: ''
+        semgrepConfig: p/default