Documentation improvement ideas

[stucka]

warn-transformer documentation never refers to an API key nor where to get it. Should be a reference to here:
https://bln-python-client.readthedocs.io/en/latest/gettingstarted.html

That documentation needs some updates (Google login, API key in different part of the menu).

Not clear from any of the instructions how to make an existing open project into something that can get picked up by the bln-python-client:
File "C:\Python\lib\site-packages\bln\client.py", line 316, in get_project_by_name
raise ValueError(f"No project named {name} found")
ValueError: No project named WARN Act Notices found