test: Adding rpcs test to csharp #2899

Job	Run time
Format C++	17s
Format C#	3m 5s
Verify Versions	10s
Check linting, formatting and typing	19s
Build Angular	34s
Build C++ Packages [tar.gz]	1m 31s
Build Web	35s
Build C++ Packages [deb]	1m 54s
Format Protobuf	6s
Build C++ Packages [rpm]	2m 29s
Format and check Rust (stable)	1m 58s
Format and check Rust (nightly)	1m 55s
Lint JS	15s
Build Java	39s
	15m 47s

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