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.

examples/opnsense/src/main.rs

@@ -12,7 +12,7 @@ use harmony::{
     modules::{
         dummy::{ErrorScore, PanicScore, SuccessScore},
         http::HttpScore,
-        okd::{dhcp::OKDDhcpScore, dns::OKDDnsScore},
+        okd::{dhcp::OKDDhcpScore, dns::OKDDnsScore, load_balancer::OKDLoadBalancerScore},
         opnsense::OPNsenseShellCommandScore,
         tftp::TftpScore,
     },
@@ -78,8 +78,7 @@ async fn main() {
 
     let dhcp_score = OKDDhcpScore::new(&topology, &inventory);
     let dns_score = OKDDnsScore::new(&topology);
-    let load_balancer_score =
-        harmony::modules::okd::load_balancer::OKDLoadBalancerScore::new(&topology);
+    let load_balancer_score = OKDLoadBalancerScore::new(&topology);
 
     let tftp_score = TftpScore::new(Url::LocalFolder("./data/watchguard/tftpboot".to_string()));
     let http_score = HttpScore::new(Url::LocalFolder(