Map Series: Make the tool so it creates folders based on the grouping field

JoabelBarbieri

Allow to configure the Map Series export process so that:

• Each map (corresponding to a feature or row in the index layer) is exported into a separate folder.

• The folder's name is determined by a grouping field (e.g., "District", "Region", "Department", etc.).

• This helps organize the exported maps hierarchically and logically