GET All Artists Tattoos

[JackCSweeney]

GET api/v0/artists/:id/tattoos
RETURNS all tattoos from specific artist

{ "data": [
           {
               "id": "322458",
               "attributes": {
                   "price": "300",
                   "time_estimate": "90",
                   "artist_id": "35446",
                   “image_url”: “image_url/link”
               }
           },
           {
               "id": "322474",
               "attributes": {
                   "price": "300",
                   "time_estimate": "90",
                   "artist_id": "35446",
                   “image_url”: “image_url/link”
               }
           },
           ...,
           ...,
       ]
   }

[JRIV-10]

SAD PATH(s)
when an invalid artists id is put in it should display:

```  {
       "errors": [
           {
               "detail": "Couldn't find Market with 'id'=123123123123"
           }
       ]
   }