feat: adding groomed jet radius and momentum balance variables for softdrop groomed jet #1079

Job	Run time
Format	25s
Wheel: 312, auto64 on ubuntu-latest	7m 39s
Check Python 3.8, auto64 on ubuntu-latest	6m 8s
Wheel: 312, auto64 on macos-13	9m 37s
Check Python 3.8, auto64 on macos-13	6m 59s
Check Python 3.12, auto64 on ubuntu-latest	6m 7s
Check Python 3.12, auto64 on macos-13	10m 1s
pass	0s
	46m 56s

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