Prefill Nextcloud Userdata at first start

[SephGER]

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Is your feature request related to a problem? Please describe.
When rolling out the desktop app for multiple users, we have to manually authenticate them on every install.

Describe the solution you'd like
Add a config file or cli arguments to the NextcloudTalk binary so that Server-URL and Username can be prefilled. Maybe even App-Password so for the first start the user can autologin without having to input data. After that the file could also be auto deleted, so that no Passwords are stored in clear text.

Describe alternatives you've considered
I can't find any config file or prefill the LocalStorage with these values automatically.