feat: add OptionValue convenience method #2918

Job	Run time
validation / GitHub context	3s
validation / Dependency info	5s
validation / Configuration files	6s
validation / Build coatjava	2m 14s
validation / Event generation (e_pC)	2m 0s
validation / Event generation (e_n)	2m 5s
validation / Event generation (e_gFT)	1m 26s
validation / Event generation (e_g)	1m 3s
validation / Event generation (eFT_K)	1m 53s
validation / Event generation (e_p)	1m 29s
validation / Run (e_pC, rgb_fall2019)	4m 56s
validation / Run (e_g, rgb_fall2019)	4m 18s
validation / Run (eFT_K, rgb_fall2019)	4m 50s
validation / Run (e_n, rgb_fall2019)	4m 29s
validation / Run (e_gFT, rgb_fall2019)	4m 46s
validation / Run (e_p, rgb_fall2019)	5m 8s
validation / Report multiplicity	3s
validation / Report efficiency	3s
	40m 57s

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