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

Cargo.toml

@@ -8,3 +8,12 @@ ratatui = "0.29"
 crossterm = "0.28"
 color-eyre = "0.6"
 nix = { version = "0.29", features = ["fs"] }
+serde = { version = "1", features = ["derive"] }
+serde_yaml = "0.9"
+
+tonic = "0.12"
+prost = "0.13"
+tokio = { version = "1", features = ["rt-multi-thread", "macros", "sync", "time"] }
+
+[build-dependencies]
+tonic-build = "0.12"