✨ feat(list): add label filtering to list command

- allow filtering messages by labels
- add labels argument to list subcommand
- update list command to use labels argument

src/list_cli.rs

@@ -1,5 +1,5 @@
 use clap::Parser;
-use cull_gmail::{Error, List};
+use cull_gmail::{Error, Labels, List};
 
 /// Command line options for the list subcommand
 #[derive(Debug, Parser)]
@@ -10,13 +10,28 @@ pub struct ListCli {
     /// Maximum number of pages (0=all)
     #[arg(short, long, default_value = "1")]
     pages: u32,
+    /// Labels to filter the message list
+    #[arg(short, long)]
+    labels: Vec<String>,
 }
 
 impl ListCli {
     pub(crate) async fn run(&self, credential_file: &str) -> Result<(), Error> {
-        log::debug!("Max results: `{}`", self.max_results);
+        let mut labels = Labels::new(credential_file).await?;
+        labels.get_labels().await?;
+        log::trace!("labels found and setup {labels:#?}");
 
         let mut list = List::new(credential_file).await?;
+        log::debug!("labels from command line: {:?}", self.labels);
+
+        for label in &self.labels {
+            if let Some(l) = labels.get_label_id(label) {
+                log::trace!("adding `{l}` id to labels");
+                list.add_label(&l);
+            }
+        }
+
+        log::trace!("Max results: `{}`", self.max_results);
         list.set_max_results(self.max_results);
         log::debug!("List max results set to {}", list.max_results());