Add examples to Demo Baml technology

We've change project structure to accommodate xml examples.

There is a main pom with two modules, each one residing at:

api-examples (existent api examples)
xml-examples - new xml example

Each project has its own README with instructions on how to deploy.

XML can be executed locally by cd into xml-examples and running mvn clean jetty:run

urls can be accessed in the browser: 
http://localhost:8080/mainmenu 
http://localhost:8080/transfer