Add external plugin foundry-agent-canvas (#2321)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

plugins/external.json

@@ -336,6 +336,33 @@
       "repo": "figma/mcp-server-guide"
     }
   },
+  {
+    "name": "foundry-agent-canvas",
+    "description": "Interactive Copilot canvas for designing, configuring, testing, and deploying Microsoft Foundry hosted agents.",
+    "version": "1.0.0",
+    "author": {
+      "name": "Microsoft",
+      "url": "https://www.microsoft.com"
+    },
+    "repository": "https://github.com/microsoft/foundry-toolkit",
+    "homepage": "https://github.com/microsoft/foundry-toolkit",
+    "license": "MIT",
+    "keywords": [
+      "agent-builder",
+      "agent-inspector",
+      "azure-ai",
+      "foundry",
+      "hosted-agents",
+      "microsoft-foundry",
+      "canvas"
+    ],
+    "source": {
+      "source": "github",
+      "repo": "microsoft/foundry-toolkit",
+      "path": "foundry-agent-canvas",
+      "sha": "0d311e56508ac200ebb86586adbee9c7b8b0601f"
+    }
+  },
   {
     "name": "gh-skills-builder",
     "description": "Repo: https://github.com/arilivigni/gh-skills-builder\nThis plugin is for people that want to create a GitHub Skills exercise which are self-paced learning GitHub within GitHub.\nhttps://learn.github.com/skills\nexamples:\nhttps://github.com/skills/agent-orchestration-build-your-ai-dream-team\nhttps://github.com/skills/agentic-workflows-that-read-the-room",