feat: add redirect from root to API documentation

api/app.py

@@ -1,5 +1,5 @@
 from fastapi import FastAPI, HTTPException
-from fastapi.responses import JSONResponse
+from fastapi.responses import JSONResponse, RedirectResponse
 from pydantic import BaseModel
 import feedparser
 import re
@@ -31,6 +31,10 @@ app = FastAPI(
     ],
 )
 
+@app.get("/", include_in_schema=False)
+def redirect_to_docs():
+    return RedirectResponse(url="/docs", status_code=307)
+
 class PegelStation(BaseModel):
     station_id: str
     station_title: str | None