find_image_by_id
🔗NAME
find_image_by_id
🔗SYNOPSIS
look up an image by ID in the database
🔗USAGE
local du = require "lib/dtutils"
local img = du.find_image_by_id(imgid)
imgid - int - the image ID to retrieve
🔗DESCRIPTION
find_image_by_id looks up an image by ID in the database.
🔗RETURN VALUE
img - dt_lua_image_t - image with the given ID if found, nil if not