Add LocalBusiness organization subtype

This is a feature request as the LocalBusiness subtype of Organization is not currently supported.

Made a initial commit for this, im still working on this and testing it

I have done some basic setup based on other config, if someone is more experienced with the module they can continue when wanted.
If there has been no progress when I get back to it, ill continue where i left off.

If you need more flexibility than what Schema Metatag provides you might want to look at Schema.org Blueprints → which provides a different approach to implementing the schema.org metadata in a way that is much more flexible.

I believe this should be part of the 3.x branch and ported the work done by @arantxio, with a small change to add the local business type field.