[Development] QDoc error tracking tool

[Sze Howe Koh]

Hi all,

I've been tracking QDoc errors in an Excel spreadsheet. It takes some
manual labour to convert the QDoc output into spreadsheet form, and
copy my existing notes into a new build.

So, in true hacker spirit, I made a tool to automate all that for me.
I've polished the code and published it at
https://github.com/JKSH/QDocErrorTracker -- I hope it's useful to
others, especially the doc team.

Features:
- Parses the STDERR output of the QDoc build process, to capture issues in the
  documentation source code. Captured issues are stored on disk.
- Displays captured issues in a spreadsheet. Spreadsheet is sortable by
  source repository, file path, error message, etc.
- Easy diff between any two builds.
- Captured issues can be annotated. Annotations automatically apply to all
  builds which contain this particular issue.


Regards,
Sze-Howe