Add metrics API to superlink #8820

Job	Run time
Build, test and upload wheel	1m 25s
Framework / bare	2m 48s
Strategy / FedMedian	1m 22s
Framework / bare-https	1m 14s
Strategy / FedTrimmedAvg	1m 19s
Framework / jax	2m 3s
Strategy / QFedAvg	1m 17s
Framework / pytorch	2m 41s
Strategy / FaultTolerantFedAvg	1m 22s
Framework / tensorflow	3m 10s
Strategy / FedAvgM	1m 19s
Framework / tabnet	2m 54s
Strategy / FedAdam	1m 13s
Framework / opacus	2m 56s
Strategy / FedAdagrad	1m 17s
Framework / pytorch-lightning	2m 41s
Strategy / FedYogi	1m 16s
Framework / scikit-learn	2m 35s
Framework / fastai	4m 1s
Framework / pandas	1m 52s
	40m 45s

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