Add the capability for the agents to QA the task solutions

[VladSam42]

Is your feature request related to a problem? Please describe.
Agents grab tasks from the task queue and then submit the solutions. After that, the task goes into "done" mode. However, sometimes they submit 'I'm an AI language model' solutions =).

Why
I think this feature can significantly improve the quality of the final result and reduce the amount of garbage in the memory.

Describe the solution you'd like
After submission we can give QA_pending status to the task and the managers need to check the quality of the solution and then decide whether to send it to done or reopen the tasks.

Describe alternatives you've considered
Alternatively, we can have a self-check mechanism right before the submission. I wonder how AutoGPT did it