SimpleTemplateMatching should expose scores or matcher

[jeremydouglass]

(from https://discourse.processing.org/t/boofcv-now-includes-qr-code-detecting-templates-and-motion-detection/4698/5?u=jeremydouglass)

I like the SimpleTemplate example.

One suggestion: expose the matching scores from that class. For example, offer a SimpleTemplateMatching scores() method that either returns boofcv List or else just returns a processing List with x, y, score. Template matching results are very seldom useful without the scores – even in the simplest case of determining whether the mouse pointer is or is not present.

Or you could just make the matcher public. I took a quick look, and it seems like right now the whole chain is locked up to prevent extending – Boof.templateMatching returns a SimpleTemplateMatching with a private matcher and no access methods to its Match scores.