Add pull request milestone features

crates/app/src/storage.rs

@@ -100,7 +100,7 @@ mod tests {
             "https://gitea.example.com|octo/demo"
         );
         let preferences: Preferences = serde_json::from_str(
-            r#"{"issue_filters":{"server|octo/demo":{"milestone":"v1","labels":["bug"]}}}"#,
+            r#"{"issue_filters":{"server|octo/demo":{"milestone":"v1","labels":["bug"]}},"pull_filters":{"server":{"milestone":"v2"}}}"#,
         )
         .unwrap();
         assert_eq!(
@@ -112,6 +112,7 @@ mod tests {
                 .labels
                 .contains("bug")
         );
+        assert_eq!(preferences.pull_filters["server"].milestone, "v2");
         assert_eq!(Preferences::default().pull_status, "open");
         assert_eq!(
             Preferences::default().appearance,