docs(ecosystem): add PHP/TYPO3 implementation (rrp/t3-toon)

[himanshuramavat]

Summary

Adds PHP / TYPO3 to the community implementations list.

Language	Repository	Maintainer
PHP / TYPO3	t3-toon · Composer: rrp/t3-toon	@therohanparmar

rrp/t3-toon v4.0.0 implements TOON Specification v3.3. The spec engine lives in Classes/Spec/ and is usable without TYPO3; the extension adds a backend Playground, usage logs, and Fluid ViewHelpers for TYPO3 12–14.

Conformance

• Implements toon-format/spec v3.3 (RRP\T3Toon\Spec\Encoder / Decoder).
• 389/389 language-agnostic conformance fixtures pass (encode + decode).
• Fixture provenance: Tests/Fixtures/spec/PROVENANCE.txt (pinned spec commit f55b93a).

Verify locally:

git clone https://github.com/therohanparmar/t3-toon.git
cd t3-toon
composer test:conformance
# or: php Tests/run-conformance.php

Usage (minimal, no TYPO3)

use RRP\T3Toon\Spec\Encoder;
use RRP\T3Toon\Spec\Decoder;

$toon = (new Encoder())->encode(['users' => [['id' => 1, 'name' => 'Ada']]]);
$data = (new Decoder())->decode($toon);

TYPO3 integration

composer require rrp/t3-toon

use RRP\T3Toon\Service\Toon;

$toon = Toon::encodeStatic($data);
$data = Toon::decodeStatic($toonString);

Maintainers

• Rohan Parmar
• Himanshu Ramavat

Issues: https://github.com/therohanparmar/t3-toon/issues

[himanshuramavat]

Hi @johannschopplich , just following up on this PR. Wanted to check if everything looks good here, or if there's anything you'd like changed (formatting, conformance proof, table placement, etc.) before it can be merged.
Happy to make any adjustments needed.
Thanks in advance for taking a look!