Add support for JPA indexes

[PromanSEW]

Expected behavior

Support indexes in @table:

@Table(name = "table_foo", indexes = @Index(columnList = "bar"))

Actual behavior

Ebean ignores these indexes and supports only own

@Index(columnNames = {"bar"})

Link: https://www.baeldung.com/jpa-indexes

P.S. Ebean @Index annotation generates potentially breaking down evolutions sql (but I did not check):

drop table if exists table_foo cascade;

drop index if exists ix_table_foo_bar;

Dropping table before its indexes? Why?