test: Adding rpcs test to csharp #2894

Job	Run time
Build Angular	32s
Build C++ Packages [tar.gz]	1m 43s
Build C++ Packages [deb]	1m 57s
Build Java	40s
Build C++ Packages [rpm]	2m 21s
Build Web	26s
Format C#	3m 10s
Format C++	13s
Format Protobuf	5m 4s
Check linting, formatting and typing	22s
Format and check Rust (stable)	2m 1s
Lint JS	13s
Verify Versions	10s
Format and check Rust (nightly)	2m 7s
	20m 59s

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