Add project archetypes for data renderer projects

Created by: gecage952

Added two maven archetypes for generating data element projects. The dependencies for the data renderer are pulled in by the parent pom, and the archetypes are children of that. I only did that so you would only have to change that dependency in one place if it needed to be changed, but maybe that isn't a big deal. The webform archetype is based on the basic vaadin archetype and connects to spring boot. Just like the vaadin one, you can run "mvn jetty:run" to test it without needing to do anything after generating the project.