Add spam protection for forms, including Contact Form 7#56

Ability to add spam protection for forms, including Contact Form 7.
Without it, I still need to run Akismet which conflicts with Shield and forces me to disable the Spam protection module in Shield. It would be great if we could use Shield protection only.

2) Add a way to have shield’s bot protection to work with CF7.

It would be great if I could have the I’m a human check box there to keep the contact submissions out.

I currently use WPBruiser just for this task and would rather use Shield Pro for everything as I think wpb might be doing some strange stuff on the site.