* feat: adds admin.upload.collections[collection-name].fields to the RTE to save specific data on upload elements
* chore: renames flatten to unflatten in reduceFieldsToValues, disables automatic arrow function return in eslint
* docs: adds documentation for upload.collections[collection-name].fields feature
* feat: adds recursion to richText field to populate relationship and upload nested fields
* chore: removes unused css
* fix: import path for createRichTextRelationshipPromise
* docs: updates docs to include images for the RTE upload docs
