Fetch assets from Google Drive

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• The new feature should help the user, connect to any Google Drive folder and access files from the path to send out emails with unique assets.
• The user must have the freedom to attach multiple assets and configure multiple folder paths to send emails with multiple assets.
• There should be an option to add unique or common assets. In the case of a common asset, the user will be allowed to upload the asset to the server and should be deleted from the server, as soon as the process is completed.