Behavior Trees - added Invert option to some of the nodes

The new option is available only in those nodes which work with image capture right now - pixel color checks, ML, image search, etc. It is very simple and semantically equivalent to Inverter node, but built in. The reason is BTs tend to grow very-very quickly and reducing overall amount of nodes should help keeping them structured.

p.s. I know these have been quiet few weeks, internally I am working on a new large feature, which will be available to public later this year. I'll keep you posted.

Bugfixes/Improvements

• [BT] Fixed a bug which lead to showing a bunch of errors whenever you've removed multiple nodes in a bulk