Add documentation for the cli::Commands enum

src/cli.rs

@@ -122,6 +122,7 @@ impl Into<log::LevelFilter> for LevelFilter {
     }
 }
 
+/// The available commands for the Payphone CLI and their available arguments.
 #[derive(clap::Subcommand, Clone)]
 pub enum Commands {
     /// Starts the bot with the provided token.