Thread: pgsql: Add additional documentation for row filters.

Add additional documentation for row filters.

Commit 52e4f0cd47 added a feature to allow specifying row filters for
logical replication of tables. This patch adds detailed documentation on
that feature including examples to make it easier for users to understand.

Author: Peter Smith, Euler Taveira
Reviewed By: Greg Nancarrow, Aleksander Alekseev, Amit Kapila, Ajin Cherian, Alvaro Herrera
Discussion: https://postgr.es/m/CAHut+PtnsBr59=_NvxXp_=S-em0WxyuDOQmSTuHGb4sVhkHffg@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/676eeb6dd1655f7a3ee783b7ca0d645580630acc

Modified Files
--------------
doc/src/sgml/logical-replication.sgml    | 562 +++++++++++++++++++++++++++++++
doc/src/sgml/ref/create_publication.sgml |   2 +
2 files changed, 564 insertions(+)