I honestly have no idea. There are literally thousands of addons out there, and I've never had reason to look for anything like you're describing. What are you using it for? What would you use the DogTags LDB plugin for? Like I said, if it's something interesting I may pick it up myself.
I use it for extending the Health and Power display of my Player and Target Frame, as I did not find any good mods out there that allow me to only edit those strings.
Currently (see screenshot) I use Gaius' CRT, but this seems to be bugged at times, and is not under development anymore.
So I just want a number of multiple blocks/strings to customize. Doesnt have to be DogTags, just something thats easy to edit.