A client for the REST API of Kimai

To be able to connect to Kimai, this crate needs some configuration. Those can be loaded from ~/.config/kimai/config.toml. This files should look as follows:

host = "HOST_DOMAIN"
user = "USERNAME"
password = "PASSWORD"

Passwords can be either stored in plain text in the configuration file, or read from pass. For the later, the path within pass needs to be stored in pass_path within the configuration file. Also the password parameter needs to be omitted, since a plain text password takes preferred to a password in pass.