[MLMD Lineage] Initial Lineage explorer draft implemented

[avdaredevil]

About

This PR addresses adding the Lineage Explorer for MLMD into this UI. This is a P0 ask for Kubeflow Core and Pipelines. There will be follow up changes and updates to polish this change and make it robust. Consider this as a semi-polished blueprint. Thanks to @ajayalfred for the source mocks (and static view), this PR was significantly faster to implement :)

Addresses #151

Special notes for your reviewer:

• This PR is built on top of the changes that Kwasi made to update this UI to use gRPC Metadata API in favor of the deprecated REST API.

Release note:

Old metadata updated with a new Lineage Explorer that provides an interactive interface to navigate through the various artifacts and executions that were invoked or created via your Kubeflow journey.

Meta

/area metadata /area front-end /priority p0 /assign @avdaredevil /cc @kwasi

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