✨ feat(list): add query support to list messages

- allow users to filter messages using a query string
  - implement set_query method to set the query
  - add query parameter to the Gmail API call

src/list.rs

@@ -19,6 +19,7 @@ pub struct List {
     hub: Gmail<HttpsConnector<HttpConnector>>,
     max_results: u32,
     label_ids: Vec<String>,
+    query: String,
 }
 
 impl List {
@@ -55,6 +56,7 @@ impl List {
             hub: Gmail::new(client, auth),
             max_results: DEFAULT_MAX_RESULTS.parse::<u32>().unwrap(),
             label_ids: Vec::new(),
+            query: String::new(),
         })
     }
 
@@ -77,6 +79,11 @@ impl List {
         }
     }
 
+    /// Set the query string
+    pub fn set_query(&mut self, query: &str) {
+        self.query = query.to_string()
+    }
+
     /// Run the Gmail api as configured
     pub async fn run(&self, pages: u32) -> Result<(), Error> {
         let log_estimate = |est: &Option<u32>| {
@@ -139,6 +146,11 @@ impl List {
                 call = call.add_label_ids(id);
             }
         }
+        // Add query
+        if !self.query.is_empty() {
+            log::debug!("Setting query string `{}`", self.query);
+            call = call.q(&self.query);
+        }
         // Add a page token if it exists
         if let Some(page_token) = next_page_token {
             log::debug!("Setting token for next page.");