[Emulation Tuning] Adjust Access Stored Keys and Tokens in Drive Emulation

[terrancedejesus]

Overview

This pull request makes adjustments to the Access Stored Keys and Tokens in Drive emulation.

• Removes the file extension list splicing so all file extensions are used. Originally this was added to set a limit to reduce time taken for emulation
• added description and references attributes to Emulation class
• added error handling to all methods
• removed access requests and file downloads from Selenium and Chrome to requests with sessions
• files are now downloaded to swat/etc/artifacts/ after being staged

emulation log file: collection_drive_access_private_keys.log
note that these "private key" files are empty and the URLs are NULL including the folder ID within Google Workspace.