Add TryServerStreaming interaction pattern (#71) #80

Job	Run time
lint	1m 0s
check-deps	43s
test (ubuntu-latest, x86_64-unknown-linux-gnu, Linux GNU, stable)	4m 5s
minimal-crates	41s
test (macOS-latest, x86_64-apple-darwin, macOS, stable)	9m 19s
test (windows-latest, x86_64-pc-windows-msvc, Windows MSVC, stable)	6m 10s
test-release (ubuntu-latest, x86_64-unknown-linux-gnu, Linux GNU, stable)	1m 52s
test (windows-latest, x86_64-pc-windows-gnu, Windows GNU, stable)	6m 12s
test-release (ubuntu-latest, x86_64-unknown-linux-gnu, Linux GNU, beta)	1m 46s
test-release (macOS-latest, x86_64-apple-darwin, macOS, stable)	3m 3s
test-release (macOS-latest, x86_64-apple-darwin, macOS, beta)	5m 31s
test-release (windows-latest, x86_64-pc-windows-msvc, Windows MSVC, stable)	3m 56s
test-release (windows-latest, x86_64-pc-windows-msvc, Windows MSVC, beta)	4m 0s
test-release (windows-latest, x86_64-pc-windows-gnu, Windows GNU, stable)	3m 58s
test-release (windows-latest, x86_64-pc-windows-gnu, Windows GNU, beta)	3m 46s
	56m 2s

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