add debug log output of EOS VM OC subjective compilation resource utilization

[spoonincode]

As part of the effort to explore allowing any contract the ability to run via EOS VM OC (even on producers), will need to collect some data on the current subjective resource utilization. Instead of a one-off hack to collect the data, it's probably worthwhile and not too difficult to add permanent debug logs containing this information. The log should contain information like the generated machine code size, CPU time used, max memory utilization, etc