fix logout and body control

• dynamically set epoch time for "&a"
• fixes issue with logout with mode ( mode 191: for login, mode 193: for logout )
• Control for product type ( unfinished )
• Validation checks for auth modes

        body_arg_passwd     = f"&password={password}" if mode == "191" else ""
        body_arg_username   = f"&username={username}"
        body_arg_epoch      = f"&a={int(time.time())}"
        body_arg_product    = f"&product={product}"
        
        body = (
            f"mode={mode}" 
            + body_arg_username 
            + body_arg_passwd 
            + body_arg_epoch
            + body_arg_product
        )

PR based on experiments with @abhikatta

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Full Changelog: v1.0.6...v1.0.8