Merge pull request #122 from caozhuozi/add-security-md

doc: add SECURITY.md

Author: gaius-qi

SECURITY.md

@@ -0,0 +1,5 @@
+# Security Policy
+
+Please refer to our [Community Security Policy][community-security-policy].
+
+[community-security-policy]: https://github.com/modelpack/community/blob/main/SECURITY.md