♻️ refactor(list): refactor list command to accept credential file

- update list command to accept credential file path
- create gmail hub in list command

src/list_cli.rs

@@ -1,16 +1,13 @@
 use clap::Parser;
-use cull_gmail::List;
-use google_gmail1::{
-    Gmail, hyper_rustls::HttpsConnector, hyper_util::client::legacy::connect::HttpConnector,
-};
+use cull_gmail::{Error, List};
 
 /// Command line options for the list subcommand
 #[derive(Debug, Parser)]
 pub struct ListCli {}
 
 impl ListCli {
-    pub(crate) async fn run(&self, hub: Gmail<HttpsConnector<HttpConnector>>) {
-        let list = List::new(hub);
-        list.run().await;
+    pub(crate) async fn run(&self, credential_file: &str) -> Result<(), Error> {
+        let list = List::new(credential_file).await?;
+        list.run().await
     }
 }