added motion_graph_inspector.py to CMakeLists.txt #430

Job	Run time
build_dependencies / build_and_cache_bpb	11s
build_dependencies / create_pip_cache	5s
build_dependencies / build_and_cache_qpSWIFT	2s
pr2_part2 / test_standalone (qpalm)	16m 57s
hsr / test_standalone (qpalm)	4m 54s
pr2_part2 / test_standalone (qpSWIFT)	17m 24s
pr2_part1 / test_standalone (qpalm)	15m 31s
donbot / test_standalone (qpalm)	5m 26s
hsr / test_standalone (qpSWIFT)	4m 31s
pr2_part1 / test_standalone (qpSWIFT)	16m 0s
donbot / test_standalone (qpSWIFT)	6m 0s
tiago / test_standalone (qpalm)	8m 24s
tiago / test_standalone (qpSWIFT)	8m 1s
	1h 43m 26s

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