### Summary

Add type hints to `ansible.utils.display::Display`

### Issue Type

Feature Idea

### Component Name

lib/ansible/utils/display.py
'''
        Returns a list of hosts, subdivided into batches based on
        the serial size specified in the play.
        '''
        
        all_hosts = self._inventory.get_hosts(play.hosts, order=play.order)
        all_hosts_len = len(all_hosts)
        
        
        serial_batch_list = play.serial
        if len(serial_batch_list) == 0:
            serial_batch_list = [-1]
        cur_item = 0
        serialized_batches = []
        while len(all_hosts) > 0:
            
            serial = pct_to_int(serial_batch_list[cur_item], all_hosts_len)
            
            
            
            if serial <= 0:
                serialized_batches.append(all_hosts)