Add link to Rust code generator.

Author: adeschamps

implementations.md

@@ -189,6 +189,8 @@ are the only keywords that changed.
     -  [php-code-builder](https://github.com/swaggest/php-code-builder)(MIT) - generates PHP mapping structures defined by JSON schema using [swaggest/json-schema](https://github.com/swaggest/php-json-schema) *supports Draft 7*
 -   Elm
     -  [json-schema-to-elm](https://github.com/dragonwasrobot/json-schema-to-elm) - generates Elm types, JSON decoders+encoders, and fuzz tests from one or more JSON Schema files, using [dragonwasrobot/json_schema](https://github.com/dragonwasrobot/json_schema) *supports Draft 7*
+-   Rust
+    - [schemafy](https://github.com/Marwes/schemafy/) - generates Rust types and serialization code from a JSON schema. *supports Draft 4*
 
 #### Web UI generation