feat: Update endpoint server-time

app/api/endpoints/server-time.py

@@ -1 +1,12 @@
-My server time endpoint!
+from fastapi import APIRouter, Depends
+from datetime import datetime
+
+router = APIRouter()
+
+@router.post("/server-time")
+async def get_server_time():
+    """
+    Get the current server time
+    """
+    server_time = datetime.now()
+    return {"server_time": server_time.isoformat()}