Added NRConfig and fetch_nr_token in nr_requests.py.

pyproject.toml

@@ -7,6 +7,7 @@ authors = [
 ]
 requires-python = ">=3.14"
 dependencies = [
+    "requests (>=2.34.2,<3.0.0)"
 ]
 
 

src/national_rail_timetable/__main__.py

@@ -0,0 +1,4 @@
+from national_rail_timetable.nr_requests import fetch_nr_token
+
+print(fetch_nr_token())
+