Testing and analysis code repo created (ACTION-219)

This closes ACTION-219: /Start a repository to house the code/

A new repo for code for the testing and analysis PFE work  [1] has been 
added under the w3c organization and is maintained by the fonts wg [2]. 
The w3c.json identifies it as tools, so not W3C Recommendation-track, 
which means it is easier for anyone to contribute to without any IPR 
checks; CONTRIBUTING.ms reflects that.

There is a basic README.md, pointing to the PFE repo [3] where the 
actual spec and the evaluation report will live, plus the usual other 
W3C files (LICENSE.md etc).

I'm assuming one directory per tool under that (with a readme saying 
what tool it is, who wrote the code, etc)? Let me know if you need 
anything else created here, though you should be able to create it 
yourselves and should feel free to do so.

[1] https://github.com/w3c/PFE-analysis
[2] https://github.com/orgs/w3c/teams/fonts-wg/repositories
[3] https://github.com/w3c/PFE

-- 
Chris Lilley
@svgeesus
Technical Director @ W3C
W3C Strategy Team, Core Web Design
W3C Architecture & Technology Team, Core Web & Media