📝 Add documentation for ZX-calculus package and C++ API docs setup #3467

Job	Run time
🔍 Change / 🕵️ Check	9s
🇨‌ Test (Extensive)	0s
🚀 CD	0s
🐍 Test (Extensive)	0s
🇨‌ Lint / 🚨 Lint	2m 45s
🇨‌ Coverage / 📈 Coverage	1m 0s
🐍 Lint / 🚨 Lint	44s
🇨‌ Test / build-matrices	1s
🐍 Test / build-matrix	1s
📝 CodeQL / 🐍 / 🐍 Analysis	1m 22s
📝 CodeQL / 🇨‌ / 🇨 Analysis	1m 47s
🇨‌ Test / 🍎 macos-13 clang Release / 🍎 macos-13 clang Release	1m 30s
🇨‌ Test / 🐧 ubuntu-24.04 gcc Release / 🐧 ubuntu-24.04 gcc Release	46s
🇨‌ Test / 🏁 windows-2022 msvc Release / 🏁 windows-2022 msvc Release	3m 56s
🇨‌ Test / 🍎 macos-14 clang Release / 🍎 macos-14 clang Release	51s
🇨‌ Test / 🐧 ubuntu-24.04-arm gcc Release / 🐧 ubuntu-24.04-arm gcc Release	1m 49s
🐍 Test / 🐍 macos-13 / 🐍 macos-13	12m 1s
🐍 Test / 🐍 ubuntu-24.04 / 🐍 ubuntu-24.04	12m 8s
🐍 Test / 🐍 macos-14 / 🐍 macos-14	6m 32s
🐍 Test / 🐍 ubuntu-24.04-arm / 🐍 ubuntu-24.04-arm	10m 16s
🐍 Test / 🐍 windows-2022 / 🐍 windows-2022	11m 1s
🐍 Test / 📈	1s
🚦 Check	2s
	1h 8m 42s

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