Clean up swagger spec
Clean up swagger spec

 - Add datasource
 - Add geometry types

aaronxsu/raster-foundry,aaronxsu/raster-foundry,raster-foundry/raster-foundry,raster-foundry/raster-foundry,aaronxsu/raster-foundry,aaronxsu/raster-foundry,raster-foundry/raster-foundry,azavea/raster-foundry,azavea/raster-foundry,azavea/raster-foundry,azavea/raster-foundry,azavea/raster-foundry