Add security policy documentation

Author: Alexandrbig1

SECURITY.md

@@ -0,0 +1,14 @@
+# Security Policy
+
+## Supported Versions
+We release patches and security updates for the following versions:
+
+| Version | Supported          |
+| ------- | ------------------ |
+| main    | ✅ (active)        |
+
+## Reporting a Vulnerability
+If you discover a security vulnerability, please do not open a public issue.  
+Instead, report it privately by emailing us at **info@opencodechicago.org**.  
+
+We will review and respond as quickly as possible. Responsible disclosure is greatly appreciated.