Save LINE Files to Google Drive & Log URL in Sheets

## Folder Search & Creation
This section handles the logic for finding or creating the appropriate Google Drive folders.
It checks if a date folder exists (when Store by Date is enabled) and whether a file type folder
 is required (when Store by File Type is enabled). Nodes in this group:

* **Search Date Folder / Check Existing Date Folder / Check if Store by Date is Enabled** 
Looks for or creates a date-based folder.
* **Create Date Folder / Set Date Folder ID** 
reates and stores the date folder ID if it doesn’t exist.
* **Search File Type Folder / Check Existing File Type Folder / Check if Store by File Type is Enabled** 
Similarly handles file type subfolder logic.
* **Create File Type Folder / Set File Type Folder ID** 
 Creates and stores the file type folder ID.
* **Merge Final Parent Folder Data / Configure Final Parent Folder ID** 
Merges the final folder IDs (date folder + file type folder) to determine where the file should be placed.