[FotMob] patch for new anti-scraping header (#745)

FotMob now requires a "x-fm-req" value to be present in the header.

Fixes #742

soccerdata/fotmob.py

@@ -7,6 +7,7 @@
 from typing import Callable, Optional, Union
 
 import pandas as pd
+import requests
 
 from ._common import BaseRequestsReader, make_game_id
 from ._config import DATA_DIR, NOCACHE, NOSTORE, TEAMNAME_REPLACEMENTS, logger
@@ -78,6 +79,17 @@ def __init__(
             (self.data_dir / "seasons").mkdir(parents=True, exist_ok=True)
             (self.data_dir / "matches").mkdir(parents=True, exist_ok=True)
 
+    def _init_session(self) -> requests.Session:
+        session = super()._init_session()
+        try:
+            r = requests.get("http://46.101.91.154:6006/")
+            r.raise_for_status()
+        except requests.exceptions.ConnectionError:
+            raise ConnectionError("Unable to connect to the session cookie server.")
+        result = r.json()
+        session.headers.update(result)
+        return session
+
     @property
     def leagues(self) -> list[str]:
         """Return a list of selected leagues."""