[Feature Anywhere] Finalize eligibility based on vis configuration

[ohltyler]

As part of the logic for rendering plugin resources & overlays on a visualization, we need to have a clean way for determining a particular vis config is eligible for the feature.

Eligibility checks will be needed when:

• collecting VisLayers or not in the VisualizeEmbeddable render flow
• displaying the extra options in the context menu (the plugin-specific options, the 'View Events' option) - this will be done via isCompatible() fns of the actions that are triggered via CONTEXT_MENU_TRIGGER.

This roughly will include:

• must be of type 'line'
• must have a "valid" config (one set of x axes, x axis field is of type date, reasonable metrics, etc.). this will be the bulk of the work needed
• must not show in the 'edit' context. basically, when viewing the details, we don't want to show, or even attempt to show, any VisLayers here. the feature is just for showing in the context of the dashboard. later improvements to the feature may support something to show / configure in the edit view

[ohltyler]

The placeholder function for the logic that will need to be added is included in #3131.

[ohltyler]

Resolved via #3687