feat: add load balancer score and frontend integration

- Implemented `OKDLoadBalancerScore` and integrated it as a `FrontendScore`.
- Added `FrontendScore` trait for TUI displayable scores.
- Implemented `Display` for `OKDLoadBalancerScore`.
- Updated `ScoreListWidget` to handle `FrontendScore` types.
- Included load balancer score in the TUI.

harmony_tui/src/widget/score.rs

@@ -1,7 +1,7 @@
 use std::sync::{Arc, RwLock};
 
 use crossterm::event::{Event, KeyCode, KeyEventKind};
-use harmony::{score::Score, topology::Topology};
+use harmony::{modules::okd::load_balancer::OKDLoadBalancerScore, score::Score, topology::{LoadBalancer, Topology}};
 use log::{info, warn};
 use ratatui::{
     layout::Rect, style::{Style, Stylize}, widgets::{List, ListItem, ListState, StatefulWidget, Widget}, Frame
@@ -23,10 +23,12 @@ struct Execution<T: Topology> {
     score: Box<dyn Score<T>>,
 }
 
+impl <T: Topology + LoadBalancer> FrontendScore<T> for OKDLoadBalancerScore {}
+
 #[derive(Debug)]
 pub(crate) struct ScoreListWidget<T: Topology> {
     list_state: Arc<RwLock<ListState>>,
-    scores: Vec<Box<dyn Score<T>>>,
+    scores: Vec<Box<dyn FrontendScore<T>>>,
     execution: Option<Execution<T>>,
     execution_history: Vec<Execution<T>>,
     sender: mpsc::Sender<HarmonyTuiEvent<T>>,