feat: create module structure

src/lib.rs

@@ -1,14 +1,4 @@
-pub fn add(left: u64, right: u64) -> u64 {
+mod cli;
-    left + right
+mod commit;
-}
+mod jj;
-
+mod prompts;
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
-}