chore: add codec to lib-ot

shared-lib/lib-ot/src/codec/mod.rs

@@ -0,0 +1 @@
+pub mod markdown;

shared-lib/lib-ot/src/lib.rs

@@ -1,3 +1,4 @@
 pub mod core;
 pub mod errors;
+pub mod parser;
 pub mod rich_text;