Support outputting debug log for min/max-DPS runs

[isundaylee]

If the new CLI option --debugMinMax is given, will additionally output min/max-DPS runs' debug logs in debug_min_dps_run and debug_max_dps_run JSON fields in the output.

Tested with doing a sim and tallying up the damage from the 3 debug runs:

$ tools/gcsim_tools.py show-damages /tmp/gcsim.out.gz.gz | pc -1 | get_sum
698147

$ tools/gcsim_tools.py show-damages /tmp/gcsim.out.gz.gz --debug-log-flavor debug_min_dps_run | pc -1 | get_sum
423780

$ tools/gcsim_tools.py show-damages /tmp/gcsim.out.gz.gz --debug-log-flavor debug_max_dps_run | pc -1 | get_sum
809334

[srliao]

now we just need ui support for this. thanks for the pr =)