feat: basic music backend

build.rs

@@ -0,0 +1,9 @@
+use std::error::Error;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    tonic_build::compile_protos("proto/settings.proto")?;
+    tonic_build::compile_protos("proto/library.proto")?;
+    tonic_build::compile_protos("proto/player.proto")?;
+
+    Ok(())
+}