[OPENENGSB-738] Provide initial root pom
[OPENENGSB-738] Provide initial root pom

Signed-off-by: Andreas Pieber <57efbcbb22ec0bd89955a40df26b44c340d3e38d@gmail.com>

openengsb/openengsb-root,GitHub2020/openengsb-root,openengsb/openengsb-root,GitHub2020/openengsb-root