Optimize syncing images and files in Airtable #461
Description
To optimize syncing databases with images and files, we should bring the changes from #416 to the Airtable plugin.
Airtable doesn't include the last edited time on all items by default like Notion does. However Airtable does have a "last edited time" field type, so we can detect if the user's base has one of those fields, and if so, get the time from that field on each item. If the base does not have a last edited time field and does have an image, file, gallery, or formatted text field, show a banner at the top of the field mapping UI that says "Add a Last Edited Time column to your Airtable base to sync faster" so users can manually create that field to benefit from faster, more optimized syncing.