[ML] Anomaly Detection: Single Metric Viewer embeddable enhancements

[peteharverson]

Describe the feature:

Follow up to https://github.com/elastic/kibana/issues/181272.

Enhancements:

• [x] In dashboards, SMV should have ability to forecast (https://github.com/elastic/kibana/pull/188791)
• [ ] Add action (for Dashboard, not Cases) to apply filter from the embeddable to the page

Maintenance tasks:

• [ ] right now timeseriesexlorer.js and timeseriesexplorer_embeddable_chart.js are near duplicates of each other (with the latter having less functionality)
  • would be good to start pulling out reusable components and functionality to avoid further duplication
• [ ] wrap required services/utilities in providers and remove reliance on dependency_cache
• [ ] Migrate to new services/providers

Tests:

• [ ] Functional Tests for the click on anomaly markers in embeddables

[elasticmachine]

Pinging @elastic/ml-ui (:ml)