WIP: TUI actor

Closes kemitix/git-next#141

crates/cli/src/alerts/tests/history.rs

@@ -46,7 +46,7 @@ fn when_history_has_expired_then_message_is_passed() {
 
 #[test]
 fn when_history_has_unexpired_then_message_is_blocked() {
-    let dur = Duration::from_secs(1);
+    let dur = Duration::from_millis(1);
     let mut history = History::new(dur);
 
     let user_notification = UserNotification::RepoConfigLoadFailure {

crates/cli/src/main.rs

@@ -1,4 +1,7 @@
 //
+#[cfg(feature = "tui")]
+mod tui;
+
 mod alerts;
 mod file_watcher;
 mod forge;