Lists requests to create a group.
The listGroupRequests() function returns a Promise that resolves to a list of up to 1,000 create group requests on your site.
Using the options parameter, you can filter your list of posts, set the amount of posts to be returned, and sort your list in a specified order.
By default, the list is sorted by _createdDate in descending order. Only admins can see create group requests. Members can access their own create group requests in their site.
Note: This function is only relevant if admin approval is required for creating a group.
Paging options.