-updated .gitignore

-added codeformat.xml for Code format standard

-added classes for base implementation of the sandbox
-THIS IS NOT COMPLETE! I am still missing implementation of routing and load balancing of transmission and also implementation of RemoteSlaveNode and LocalNodeContainer. I also need to add more javadoc.

NOTE: for more information about this commit wait till the next one, where I should add javadoc and wiki documentation on the base implementation od the sandbox. This commit is to show the rest of the team what structure I am working on for the sandbox.