Add toon-zig: Zig implementation of TOON

[copyleftdev]

Summary

Adds toon-zig to the community implementations list.

Repository: https://github.com/copyleftdev/toon-zig

Features

• Full TOON v3.0 specification compliance
• Encoder (JSON → TOON) with configurable delimiters
• Decoder (TOON → JSON) with strict mode validation
• Zero dependencies, pure Zig
• Memory safe with explicit allocator management
• Key folding and path expansion support
• Requires Zig 0.14.0+

Testing

• Unit tests for encoder/decoder
• Fixture-based tests using reference test suite
• Property-based chaos testing
• Edge case fuzz tests

License

MIT