Add functionality to search by an artworks aspect ratio or orientation.

[xstephen95x]

This task is complete when:

• The artist portal's upload script reads the artwork's dimensions and stores them in that artwork's JSON.
• A script is composed and executed which goes through all existing artworks, finds their dimensions, and then stores them in the artist-tekuma database.
• A field is added to the search accordion, where {portrait, landscape, square} are listed, and 1 or 1+ can be checked/specified to be included in the query results.