fix: improve tests and remove unused code

- Corrected XML test data to remove unnecessary `<descr>` tags, resolving failing tests.
- Removed the unused `ratatui_utils` module and its associated code.
- Simplified example in `harmony_tui/src/lib.rs` to use `tokio::main` and register scores directly with `Maestro`. This aligns with the project's evolving structure.

harmony_tui/src/lib.rs

@@ -1,4 +1,3 @@
-mod ratatui_utils;
 mod widget;
 
 use log::{debug, error, info};
@@ -30,17 +29,26 @@ pub mod tui {
 ///
 /// # Example
 ///
-/// ```rust
-/// use harmony;
-/// use harmony_tui::init;
-///
-/// #[harmony::main]
-/// pub async fn main(maestro: harmony::Maestro) {
-///     maestro.register(DeploymentScore::new("nginx-test", "nginx"));
-///     maestro.register(OKDLoadBalancerScore::new(&maestro.inventory, &maestro.topology));
-///     // Register other scores as needed
-///
-///     init(maestro).await.unwrap();
+/// ```rust,no_run
+/// use harmony::{
+///     inventory::Inventory,
+///     maestro::Maestro,
+///     modules::dummy::{ErrorScore, PanicScore, SuccessScore},
+///     topology::HAClusterTopology,
+/// };
+/// 
+/// #[tokio::main]
+/// async fn main() {
+///     let inventory = Inventory::autoload();
+///     let topology = HAClusterTopology::autoload();
+///     let mut maestro = Maestro::new(inventory, topology);
+/// 
+///     maestro.register_all(vec![
+///         Box::new(SuccessScore {}),
+///         Box::new(ErrorScore {}),
+///         Box::new(PanicScore {}),
+///     ]);
+///     harmony_tui::init(maestro).await.unwrap();
 /// }
 /// ```
 pub async fn init<T: Topology + std::fmt::Debug + Send + Sync + 'static>(