[feat] MDR-level as an option for limiting the AI answers

[pkarw]

I think we could define the process.env.LIMIT_MDR_LEVEL_RESPONSE = [MDR0, MDR1....] to set the requested level of responses - of course giving the lowest possible value for the demo purposes

[pkarw]

examples:

MDR3 (which we really don't want):

MDR0 (which we could want to have):