Initial commit: Chrony NTP Server add-on for Home Assistant

- NTP client syncs from configurable pools and servers
- NTP server mode serves time to LAN clients
- Web UI dashboard showing sync status, sources, and clients
- Supports iburst and maxsources options

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.vscode/tasks.json

@@ -0,0 +1,20 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+      {
+        "label": "Start Home Assistant",
+        "type": "shell",
+        "command": "supervisor_run",
+        "group": {
+          "kind": "test",
+          "isDefault": true
+        },
+        "presentation": {
+          "reveal": "always",
+          "panel": "new"
+        },
+        "problemMatcher": []
+      }
+    ]
+  }
+