impl kb_info & dialog_info & doc_info (#9)

* feat: impl kb_info & dialog_info

* feat: impl doc_info apis

src/api/mod.rs

@@ -1,6 +1,9 @@
 use serde::{Deserialize, Serialize};
 
 pub(crate) mod tag;
+pub(crate) mod kb_info;
+pub(crate) mod dialog_info;
+pub(crate) mod doc_info;
 
 #[derive(Debug, Deserialize, Serialize)]
 struct JsonResponse<T> {