Add Figma plugin information to external.json

Added Figma plugin details including name, description, version, author, homepage, keywords, license, repository, and source.

Author: siminapasat

plugins/external.json

@@ -122,5 +122,22 @@
       "source": "github",
       "repo": "MicrosoftDocs/mcp"
     }
+  }, 
+  {
+    "name": "figma",
+    "description": "Plugin that includes the Figma MCP server and Skills for common workflows.",
+    "version": "1.0.0",
+    "author": {
+      "name": "Figma",
+      "url": "https://www.figma.com"
+    },
+    "homepage": "https://github.com/figma/mcp-server-guide",
+    "keywords": ["figma", "design", "mcp", "ui", "code-connect"],
+    "license": "TODO",
+    "repository": "https://github.com/figma/mcp-server-guide",
+    "source": {
+      "source": "github",
+      "repo": "figma/mcp-server-guide"
+    }
   }
 ]