Add namespace-level README for matifali

- Required by registry validation
- Describes the namespace and available templates

Co-authored-by: ioAtif <[email protected]>

Author: blink-so[bot]

registry/matifali/README.md

@@ -0,0 +1,11 @@
+# matifali
+
+Templates and modules created by M Atif Ali (@ioAtif).
+
+## Templates
+
+- [gemini-cli](./templates/gemini-cli/) - A Kubernetes workspace template with Gemini CLI for AI-powered coding assistance
+
+## About
+
+This namespace contains Coder templates and modules that integrate AI-powered development tools to enhance the coding experience in cloud development environments.