Record information about the template upon opening a template dialog in VisualEditor or TemplateWizard. This will be summarized to learn about the actual, human usage frequency of templates.
Data to record:
- Template title
- Whether this is adding or editing an invocation
- Whether TemplateData was found
We probably need to add a new event type, since there's no way to pass data through VisualEditorFeatureUse.