Add PubSub types. #2707

Job	Run time
test-ubuntu-latest-Security.Certificates	2m 24s
test-ubuntu-latest-Core	3m 6s
test-ubuntu-latest-Server	3m 55s
test-ubuntu-latest-Client	34m 54s
test-ubuntu-latest-Client.ComplexTypes	2m 3s
test-ubuntu-latest-PubSub	1m 13s
test-ubuntu-latest-Configuration	2m 14s
test-ubuntu-latest-Gds	3m 23s
test-windows-latest-Security.Certificates	2m 59s
test-windows-latest-Core	3m 12s
test-windows-latest-Server	6m 46s
test-windows-latest-Client	39m 54s
test-windows-latest-Client.ComplexTypes	4m 48s
test-windows-latest-PubSub	3m 22s
test-windows-latest-Configuration	6m 0s
test-windows-latest-Gds	5m 43s
test-macOS-latest-Security.Certificates	1m 47s
test-macOS-latest-Core	1m 9s
test-macOS-latest-Server	4m 2s
test-macOS-latest-Client	27m 26s
test-macOS-latest-Client.ComplexTypes	1m 49s
test-macOS-latest-PubSub	1m 8s
test-macOS-latest-Configuration	1m 45s
test-macOS-latest-Gds	2m 45s
	2h 47m 47s

Provide feedback