[Feature Anywhere] Collect VisLayers when rendering visualization line charts

[ohltyler]

As part of #2880, we will need to inject logic in the visualization render flow to fetch and render any associated VisLayers on the chart.
Breaking this into steps, this would look like:

1. Determine whether a given vis is eligible to render VisLayers (e.g., of type line, valid axes configs)
2. Fetch all augment-vis saved objects that reference this particular vis
3. Construct a pipeline of expressions functions using the specified name & args listed in the saved object(s)
4. Execute the pipeline to collect a set of VisLayers

The process for parsing the collected VisLayers and actually updating the chart canvas is tracked in #3130.

[ohltyler]

Eligibility will be handled separately as part of #3268

[ohltyler]

#3131 has merged