Bundle Add-ons & More Banners/Author Images in Core LifterLMS

[kimcoleman]

Is your feature request related to a problem? Please describe.
We currently load all the images for the Add-ons & More admin screen from the LifterLMS.com website. We can bundle these images into the core plugin to reduce the draw on the LifterLMS.com site and also make images load faster for our users.

Describe the solution you'd like
We should update the single Add On view to load images relative to the core plugin.

Here are the places we load these images:

• Banner: https://github.com/gocodebox/lifterlms/blob/trunk/includes/admin/views/addons/addon-item.php#L19
• Author Logo/Icon: https://github.com/gocodebox/lifterlms/blob/trunk/includes/admin/views/addons/addon-item.php#L37

The image files can use the same "slug" as the product permalink so there is no new data to manage.

There is one primary downside to this - if we add a new item to this page, it won't be in the core plugin already.
My recommendation is to use a fallback if the image is not found, whether pulled from LifterLMS.com OR a fallback default image bundled in the core plugin for banner or "author" avatar/icon.

Describe alternatives you've considered
The alternative is that we keep doing what we are doing OR consider hosting on a separate server from our main website to lessen the load.