* [OCaml] Fix bugs around enum parsing
Problem: The OCaml client generator threw IllegalArgumentException: Unreferenced enum when encountering enums inside composed schemas
(anyOf/allOf/oneOf).
Root Causes:
1. The enum collection logic didn't traverse into composed schemas
2. The enum hashing used order-dependent string concatenation, causing lookups to fail when enum values appeared in different orders
3. Enums directly within composed schema branches (not in properties) weren't collected
Solution:
1. Added composed schema support:
- New `collectEnumSchemasFromComposed()` method handles `anyOf/allOf/oneOf`
- New `collectEnumSchemasFromList()` method recursively processes composed schema branches
- Enums directly in composed schemas (not just in properties) are now collected
2. Refactored enum hashing to use Set:
- Changed from comma-joined strings to `TreeSet<String>` for order-independent, collision-free hashing
- Handles edge cases like empty string enums `""`
3. Added test case:
- Tests enums in nested composed schemas
- Tests enum with empty string value in anyOf
* OCaml: Add support for direct recursive types
* OCaml: Fix enums in anyOf
* OCaml: fix recursive types
* Fix recursion tests
* Fix recursive types, improve tests
* [OCaml] Improve title of generated README.md
4f00a34df6