1. random browser in each class instance (headers are set automatically),
2. CLI: file download debugging (removed chunks, added timeout),
3. removed sleep between requests,
4. removed VQDExtractionException,
5. BUGFIX: AsyncDDGS - used AsyncSession instead of Session,
6. BUGFIX AsyncDDGS on windows - change asyncio.set_event_loop_policy
7. logging: improved debug messages.