Cannot do a login without first configuring synadm

[JacksonChen666]

Quite bad user experience, as not inputting token (which isn't set yet) will not allow the configuration to finish (it should probably fail earlier or ask again or allow empty) which makes things like synadm matrix login not possible

1. Delete config
2. Try to run synadm matrix login or even synadm matrix
3. Get synadm config in your face

synadm 0.45

[JOJ0]

Hmm yeah this could be more user friendly, but at least here it's documented how to work around this shortcoming: https://github.com/JOJ0/synadm?tab=readme-ov-file#getting-an-admin-token

Hope that helps for now