Add CirclePlusAllowJoiningRequest with response to RESPONSE_MESSAGES #1485

Job	Run time
Prepare	1m 6s
Shellcheck	6s
Dependency	6s
Ruff check and force	6s
Check commit	37s
Create pytest cache for Python 3.13	38s
Run pytest using Python 3.13	20s
Process test coverage	17s
Run mypy	8s
Process test complexity	6s
Build and publish Python 🐍 distributions 📦 to TestPyPI	20s
	3m 50s

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