Make compatible with Windows

[peakstack]

Since dbus is not compatible with Windows, there is no way to run the application.

Compiling dbus v0.2.3 error[E0433]: failed to resolve: could not find unix in os

[matze]

The dbus dependency comes from the secret service crate used to access the keyring. There is the keyring crate which allows to set passwords based on service and username but does not allow to attach further properties such as the host address I need store as well. No idea, what to do about that at the moment.