entity: jdbc: add comment-out .gitignore /*.jar entry
entity: jdbc: add comment-out .gitignore /*.jar entry

for backward-compat reasons with existing projects this is not the
default, but can be uncommented.
ilscipio/scipio-erp,ilscipio/scipio-erp,ilscipio/scipio-erp,ilscipio/scipio-erp,ilscipio/scipio-erp