feat: add image fetching

src/args.rs

@@ -1,3 +1,5 @@
+//! Program arguments
+
 use std::{
     os::{linux::net::SocketAddrExt, unix::net::SocketAddr},
     path::PathBuf,
@@ -10,9 +12,11 @@ use clap::Parser;
 #[command(version, about, long_about = None)]
 #[command(styles = get_clap_styles())]
 pub struct Args {
+    /// Config file path to parse
     #[arg(short, default_value = "/etc/authy-oidc.toml")]
     pub conf: PathBuf,
 
+    /// Pamsock abstract name to connect to
     #[cfg(feature = "pamsock")]
     #[arg(long, default_value = "pam")]
     #[arg(value_parser = parse_as_abstract_name)]