[scripts] add script to diff complexity logs

• Related issues: N/A
• Requested reviewers:

This MR adds a script to diff logs produced by the WMC tool at scripts/diff_complexity.py:

usage: diff_complexity.py [-h] [-o OUTFILE] [-q] [-v] bsl cut

WMC TOOL instrumented log file parser

positional arguments:
  bsl                   input logfile for baseline condition
  cut                   input logfile for condition under test

options:
  -h, --help            show this help message and exit
  -o OUTFILE, --outfile OUTFILE
                        output csv table
  -q, --quiet           no console output
  -v, --verbose         print detailed info about routines

Features:

• Can output a .csv file with the difference tables with -o/--outfile
• Shows a routine-level breakdown with the -v/--verbose flag
• Quiet mode for scripts
• Colours!

Verbose mode with identical routines:

Verbose mode with differing routines: