✨ feat(list): add max results option to list command

- allow users to specify the maximum number of results to return
- add `max_results` argument to the `ListCli` struct
- set the max results on the `List` struct

src/list_cli.rs

@@ -3,11 +3,19 @@ use cull_gmail::{Error, List};
 
 /// Command line options for the list subcommand
 #[derive(Debug, Parser)]
-pub struct ListCli {}
+pub struct ListCli {
+    #[arg(short, long, default_value = cull_gmail::DEFAULT_MAX_RESULTS)]
+    max_results: u32,
+}
 
 impl ListCli {
     pub(crate) async fn run(&self, credential_file: &str) -> Result<(), Error> {
-        let list = List::new(credential_file).await?;
+        log::debug!("Max results: `{}`", self.max_results);
+
+        let mut list = List::new(credential_file).await?;
+        list.set_max_results(self.max_results);
+        log::debug!("List max results set to {}", list.max_results());
+
         list.run().await
     }
 }