Add bucklet based build to plugin archetype

If a plugin project is generated with the Maven plugin archetype it
should immediately be buildable with Buck, because Buck is our
preferred build tool for building plugins.

Change-Id: I158dc3df76e4585d9894b0be862aef4d13deb478
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
7 files changed