refactor: move firmware workspace under firmware

firmware/libs/kaptan-config-mavlink/src/service.rs

@@ -0,0 +1,14 @@
+//! Transport-neutral façade for the custom configuration service.
+//!
+//! Public callers see one small protocol API here.  Its bounded query,
+//! session, replay, and CBOR-import mechanics stay in private sibling modules
+//! so no one concern becomes a second service owner.
+
+mod import;
+mod query;
+mod replay;
+mod session;
+
+pub use import::{CAPABILITY_CBOR_IMPORT, NoSnapshotImporter, SnapshotImporter};
+pub use query::{ConfigInfo, DescriptorPage, ServiceResponse, ValueResponse};
+pub use session::ConfigProtocol;