Add website banner config

ntrogh · ntrogh · commit 10a40cf90383 · 2026-03-18T21:11:45.000+01:00
diff --git a/build/banner.json b/build/banner.json
@@ -0,0 +1,7 @@
+{
+  "enabled": true,
+  "version": "2026-03-17-ghcp-events",
+  "message": "Explore Agentic Development -",
+  "linkText": "Join a GitHub Copilot Dev Day near you!",
+  "linkUrl": "https://aka.ms/githubcopilotdevdays"
+}
