Update Workflow List page based on latest mocks

[ohltyler]

Description

This PR updates the Workflow List page to match the latest UX mocks. Specifically:

• adds a new frontend-only-maintained set of workflow types. These will be based on the selected use cases, and is independent of the backend use_case field. Can maintain fallback options of CUSTOM and UNKNOWN if the workflow is created from scratch, or if coming from a backend-only-created workflow, respectively
• updates list columns, to just be name / workflow type / last updated
• updates list actions, to be 1/ delete workflow and 2/ a flyout showing the list of resources created by that particular workflow
• updates list filters, to be the possible workflow types, instead of the workflow states, which we now are not exposing.
• adds helpful text and a link to the create tab under the workflow list title
• minor refactoring of the resources list so it can be reused in the flyout on the workflow list page
• minor update to the delete workflow modal to include a cancel option
• minor update to show a toast notification once deletion completes successfully/unsuccessfully

Demo video showing the new columns, new action, and new helpful text/button:

screen-capture.43.webm

Check List

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