🦙 TinaCMS | Set up Visual Editing for Rules

[tkapa]

As per #1492,

We should now have a documented solution to follow to implement Visual Editing on Gatsby.

• Follow the steps to add Visual Editing on Gatsby
• Fix where appropriate
• Visual Editing is now available for the Rules Collection on Staging

[PothieuG]

As we decided to create a Gatsby Starter, we will document how to setup the visual editing in this PBI, and so the documentation:
#1588

Here is the Tina x Gatsby working repository with documentation that shows you how you can implement it :
https://github.com/[PothieuG/tina_x_gatsby_template](https://github.com/PothieuG/tina_x_gatsby_template)

[JackDevAU]

This is no longer needed as we aren't using Gatsby.