feat: adding openapi spect generation to the frontend client aas well as to fast api. Broke API out into different routes

mta_sign_server/router.py

@@ -0,0 +1,12 @@
+from datetime import datetime
+
+from fastapi import APIRouter, status
+
+router = APIRouter(
+    tags=["start"],
+)
+
+start_time = datetime.now()
+@router.post("/api/start_time", status_code=status.HTTP_200_OK)
+def get_start_time():
+    return start_time.isoformat()