Add support for syncing all collections shared with specific groups

[parkerbxyz]

It would be nice to be able to specify a group or list of groups and publish all collections shared with those groups.

Example:

# Get all collections and publish each of them that are shared with all members
guru_collections = source.get_collections()
for collection in guru_collections:
    collection_groups = collection.get_groups()
    for group in collection_groups:
        if group.group_name == "All Members":
            destination.publish_collection(collection)