[Feature] [Vis Augmenter] Support high-cardinality detectors in visualizations

[ohltyler]

Currently, the feature is limited to only support single-stream detectors to be both (1) created and (2) associated to visualizations. This is due to added complexity regarding automatic high-cardinality-detector generation based on visualization configurations, which need to be narrowly specified and have a terms aggregation on the x-axis.

However, even given that niche use-case, a simpler and more feasible iterative approach would be to allow existing high-cardinality anomaly detectors to be associated to visualizations, and be overlaid on top of visualizations the same as single-stream detector anomalies. Automatic detector creation logic can be added later.

Some technical things to consider:

• is special rendering logic needed in the associated detectors or view events flyout to support HCAD alongside single-stream?
• what added logic is needed to fetch and format high-cardinality anomalies and include them in the chart generation?