🐛 Fix Enum handling with their own schema definitions (#1463)

🐛 Fix Enum handling with their own schema definitions (#1463)

* 🐛 Fix extra support for enum with its own schema

* ✅ Fix/update test for enum with its own schema

* 🐛 Fix type declarations

* 🔧 Update format and lint scripts to support locally installed Pydantic and Starlette

* 🐛 Add temporary type ignores while enum schemas are merged