Test: add irmaclient integration test #530

Job	Run time
docker-build	1m 9s
build (linux, amd64)	1m 15s
build (linux, 386)	52s
build (linux, arm)	59s
build (linux, arm64)	46s
build (darwin, amd64)	1m 2s
build (darwin, arm64)	51s
build (windows, amd64)	58s
build (windows, 386)	1m 11s
build (windows, arm)	1m 9s
build (windows, arm64)	58s
lint	1m 29s
test	7m 22s
integration-test-serverside (245a4ec92d36b41216a3f88d6e9a8c56967a4af0)	1m 52s
integration-test-clientside (v0.13.2)	1m 50s
analyze	2m 57s
	26m 40s

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