Test: add irmaclient integration test #552

Job	Run time
lint	1m 42s
test	7m 33s
docker-build	57s
build (linux, amd64)	49s
build (linux, 386)	47s
build (linux, arm)	48s
build (linux, arm64)	54s
build (darwin, amd64)	1m 6s
build (darwin, arm64)	47s
build (windows, amd64)	1m 10s
build (windows, 386)	55s
build (windows, arm)	59s
build (windows, arm64)	48s
analyze	2m 36s
integration-test-clientside (v0.13.2)	3m 32s
integration-test-serverside (ab3f743c339f10bd80fe79d0d8d34e8be0c430a3)	3m 22s
	28m 45s

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