entity_markup
This module allows for more granular control of the entity field markup to reduce the number of twig template overrides needed for a project.
For complex situations overriding is still supported, but if your change is something simple (i.e. having a title field render with a certain header tag) this module lets you do it all from the admin instead of making a new twig template.
Similar Modules
Fences - https://www.drupal.org/project/fences
This module does a similar function, but only on a per field basis. Entity Markup does this functionality on a per field per view mode basis to allow for greater flexibility on complex projects.
Display Suite - https://www.drupal.org/project/ds
This module does allow for field markup customization, but it's also a fully built out layout manager. I wanted to use the core layout manager, so this module wasn't quite what I was looking for.