Merge pull request #3236 from matrix-org/rav/consent_notice

synapse/config/consent_config.py

synapse/handlers/events.py

synapse/handlers/presence.py

synapse/replication/tcp/resource.py

synapse/rest/client/v2_alpha/sync.py

synapse/rest/consent/consent_resource.py

synapse/server.py

synapse/server.pyi

synapse/server_notices/consent_server_notices.py

synapse/server_notices/server_notices_sender.py

synapse/server_notices/worker_server_notices_sender.py

synapse/storage/registration.py

...e/schema/delta/49/add_user_consent_server_notice_sent.sql

tests/storage/test_registration.py

tests/utils.py