Command Interfaces:
G4GLSTFIL - List Files
G4GUPLOAD - Upload File to Google Drive
G4GDLOAD - Download File from Google Drive
G4GCRTFLR - Create Google Drive Folder
G4GTRASH - Move a File to Trash
G4GUNTRASH - Restore a File from the Trash
ILE Subprocedure Interfaces:
g4gdrv_setValue
g4gdrv_resetValues
g4gdrv_getID
g4gdrv_listFiles
g4gdrv_upload
g4gdrv_moveFile
g4gdrv_downloadFile
g4g_createFolder
g4g_trashFile
g4g_unTrashFile
g4g_deleteFile
