A proposition to make admin forms (the forms that defines the content for the slides) dynamic by creating a way to load them as a React component instead of as a json-file. The json renderer is kept.

The POC is on image-text as this is a pretty straightforward template, but still has a lot to configure and would benefit UX-wise by being more dynamic.

• Add handler for rendering admin forms
• Add an admin form (remove the adminForm entry in the json file)
• Fix issue that i expect is present when choosing a template without the render-method present
• Test in client
• Test in preview
• Write playwright test
• Update documentation