TCI - Add missing required files

* about.htmls for template annotation and annotation model
* NOTICE and CONTRIBUTING files based on
https://www.eclipse.org/projects/tools/documentation.php?id=modeling.ecp

Change-Id: I2d5cc13ac951eb67eea32199e7453d455640b4e6
Signed-off-by: Johannes Faltermeier <jfaltermeier@eclipsesource.com>
5 files changed