How do I a custom entity operation with a webform submission?
It seems the answer came from spending a day (and a bit) just studying the inner workings of D8 and realizing just how much is done for you that wasn't the case in D7.

Ultimately I want to send the action to a Controller, not a plugin and the primary source for getting enough grounding to figure it out came from the following:


https://www.drupal.org/docs/8/api/routing-system/structure-of-routes
https://www.drupal.org/docs/8/api/configuration-api/creating-a-configuration-entity-type-in-drupal-8
https://www.drupal.org/docs/8/api/entity-api/creating-a-content-entity-type-in-drupal-8