details on gui
points to massive extraction using s json file
add dir or files not duplicated
load points to extract from a selected json file
a main script to directly call massive calcs frame
same format into point listbox
disabling the text attached to the item list about the kind of point added, lat/long or row/col
a dict with a label and a list of lat long pair
a new function GetMasiveValues to extract values of multiple images
global list with data points from the json file and global list with the directory or files to be processed and a call to GetMasiveValues