Add an option to disable Session Encryption

[cleanerspam]

Problem

If a user or even owner wants to leech bulk files from a private telegram they have to enter decryption password every time .
For example if command was
/leech -b replied to a .txt file with 500 links then user would have to enter password 500 times

Solution Proposed

Solution1

Ask for password only once and when user authorises it keep the decrypted key in database for 2 hours after the last task completed .

Solution 2

Simply give an option in config.env to disable encryption of keys

Solution 3

Ask if user wasnts to use encryption and warn about dangers if not encrypting .