Lineage: add MetricTags to PipelineTag and ComponentTag

[eledhwen]

Once computed, MetricTags should probably be added to PipelineTag and ComponentTag records as they are expected to be an important part of how the run should be categorized.

[ukeloveth]

@eledhwen Please can assign this task to me, thanks

[eledhwen]

Hello @ukeloveth!

Thank you for joining! We won't assign issues to non-maintainers however you are free to submit a MR!

Note that this is a "good first issue" as long as one has some grasp on what is actually being attempted, do you use this library in some capacity?