move IType to the org.jboss.tools.hibernate.spi plugin
get rid of unneeded ISessionImplementor interface
move ITypeFactory to the org.jboss.tools.hibernate.spi plugin
move IQuery to the org.jboss.tools.hibernate.spi plugin
move ICollectionMetadata to the org.jboss.tools.hibernate.spi plugin
correct typo
move IQueryTranslator to the org.jboss.tools.hibernate.spi plugin
remove org.hibernate.Filter uses (except from proxies)
cleanup references to unexisting IFilter interface