[hbase-operator-tools] Add checkstyle plugin and configs from hbase

hbase-operator-tools does not include checkstyle plugin in pom. In particular, does not include the checkstyle config that is in hbase so when yetus does a check of operator-tools in a PR, checkstyle finds a massive amount of violations as the default checkstyle config is strict (e.g. 80 character line lengths rather than 100 as we have in hbase).