pgx-and-ping-support

- Support from `;` only ping.
- Added more `NOP` responses for client boilerplate.
- Added connections parameter `standard_conforming_strings=on`.

- Added connections parameter `standard_conforming_strings=on`.

- Support from `;` only ping.

- Added more NOP for slient ib boilerplate.

- Support from `;` only ping.

- Added more NOP for slient ib boilerplate.

ping-support

self-renedering-rows

add-client-sync-placeholder-response

Summary:

- Add server ready placeholder response for client sync message.

server-publish-notice

Summary:

- Publish notice messages over wire protocol.
- Opt-in.
- Emulating the actual `postgres` backend, per [send_message_to_frontend()](https://github.com/postgres/postgres/blob/4694aedf63bf5b5d91f766cb6d6d6d14a9e4434b/src/backend/utils/error/elog.c#L3516)

- Removed dead code.

- More improvement.