Add relative rotation metric on Rotation Averaging module #868

Job	Run time
macos-latest_virtualenv_py3.8	2m 4s
macos-latest_virtualenv_py3.9	2m 17s
macos-latest_virtualenv_py3.10	2m 14s
ubuntu-latest_virtualenv_py3.8	1m 44s
ubuntu-latest_virtualenv_py3.9	1m 18s
ubuntu-latest_virtualenv_py3.10	1m 22s
windows-latest_virtualenv_py3.8	3m 48s
windows-latest_virtualenv_py3.9	3m 41s
windows-latest_virtualenv_py3.10	3m 52s
	22m 20s

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