refactor(cli): move cmd_generate + cmd_rate into commands/

crates/relicario-cli/src/commands/mod.rs

@@ -5,3 +5,6 @@
 //! command modules (e.g. `commit_paths`, `resolve_query`) are defined in
 //! this file as `pub(crate)` so siblings can pull them in via
 //! `use crate::commands::*`.
+
+pub mod generate;
+pub mod rate;