feat: add gRPC client with config-based server address and album support

- Add tonic/prost gRPC client connecting to music-agregator service
- Add config.yaml for configurable server host/port
- Add build.rs for proto compilation from music-agregator
- Update Artist/Album models to match proto with MonitorState enum
- Convert album list from GetArtists response
- Fix album click selection with correct layout offsets
- Improve monitor state icons for better visibility

build.rs

@@ -0,0 +1,17 @@
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let proto_root = "../music-agregator/proto";
+
+    tonic_build::configure()
+        .build_server(false)
+        .build_client(true)
+        .out_dir("src/proto")
+        .compile_protos(
+            &[format!(
+                "{}/music_agregator/v1/music_agregator.proto",
+                proto_root
+            )],
+            &[proto_root],
+        )?;
+
+    Ok(())
+}