Add RENAME support for PUBLICATIONs and SUBSCRIPTIONs

src/backend/commands/alter.c

src/backend/parser/gram.y

src/backend/replication/logical/worker.c

src/bin/psql/tab-complete.c

src/test/regress/expected/publication.out

src/test/regress/expected/subscription.out

src/test/regress/sql/publication.sql

src/test/regress/sql/subscription.sql

src/test/subscription/t/001_rep_changes.pl