Set max result rows by default

[thiagodsti]

In order to make this work just as the clickhouse playground I set default values for: max_result_rows, max_result_bytes and result_overflow_mode.

[caioricciuti]

Hey @thiagodsti good one, the only thing that I'm worried about is that my queries and some clients that use CH-UI expect much more than 1000 rows, I'll see if I can add on the admin page a setting that can change that. Then we can merge, sounds good?

[thiagodsti]

oh makes sense I can do that i'll add to the admin page