Add query params for image api

Allow other systems consume the images contained here with pagination and filter of type of images

Offers images to other systems

Returns an array of maximum 5000 json objects with the following properties:

**id**: unique incremental number for each image
**image**: name of the image
**message_origin_info**: source of the image
**message_origin_url**: additional data for the source

Query parameters

**initial_id** [optional] : minimum id to fetch data
**message_origin_info** [optional] : filters images of the given type, when not present, offers 
  all images of any type
**page_size** [optional] : amount of data that can be fetched, 100 by default and at most 5000