Add smithery.yaml config schema for Configuration UX score

Defines the config schema with API key parameter so Smithery
can generate proper connection UI for users.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: sai-aarna

smithery.yaml

@@ -0,0 +1,17 @@
+# Smithery configuration for ATV MCP server
+# https://smithery.ai/docs/build/publish
+
+startCommand:
+  type: http
+  url: https://atv-api.aarna.ai/mcp
+
+configSchema:
+  type: object
+  properties:
+    ATV_API_KEY:
+      type: string
+      title: API Key
+      description: API key for authenticating with the ATV API. Get one at https://aarna.ai
+      x-from: header
+  required:
+    - ATV_API_KEY