Immutable built in types and code generation #5838

Job	Run time
test-ubuntu-latest-Gds	7m 47s
test-ubuntu-latest-SourceGeneration.Core	5m 30s
test-ubuntu-latest-Client	22m 12s
test-ubuntu-latest-SourceGeneration.Stack	1m 41s
test-windows-latest-Client	22m 57s
test-ubuntu-latest-Configuration	3m 21s
test-windows-latest-SourceGeneration	2m 29s
test-ubuntu-latest-Server	6m 36s
test-windows-latest-Client.ComplexTypes	5m 21s
test-windows-latest-Security.Certificates	4m 26s
test-windows-latest-Server	8m 30s
test-ubuntu-latest-Security.Certificates	4m 10s
test-ubuntu-latest-SourceGeneration	1m 37s
test-windows-latest-Gds	8m 4s
test-ubuntu-latest-Client.ComplexTypes	5m 57s
test-ubuntu-latest-Types	1m 6s
test-windows-latest-Configuration	4m 13s
test-windows-latest-Core	6m 40s
test-ubuntu-latest-PubSub	3m 56s
test-windows-latest-Types	2m 15s
test-ubuntu-latest-Core	4m 58s
test-windows-latest-SourceGeneration.Core	6m 43s
test-windows-latest-SourceGeneration.Stack	2m 29s
test-windows-latest-PubSub	5m 37s
	2h 28m 35s

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