feat: pg_catalog.version(), standard_conforming_strings session var

[scsmithr]

Adds the pg_catalog.version() function (which provides more info that the server_version session var). The format provides compatibility with sqlalchemy/great expectations.

Also adds the standard_conforming_strings session var since great expectations was looking for this too.

I included the python script I was running against to get great expectations working, and it seems to connect without issue. But I haven't tried anything more than that.

cc @talagluck

[scsmithr]

@universalmind303 I was originally trying to use session_var("server_version") here, but was getting a "Unknown variable: server_version" error.

Using server_version here would be incorrect anyways, but where would I look to enable using it with session_var?

[tychoish]

I would not put the great expectations dependency or example in the python bindings (it's all via the pg protocol and so is orthogonal. otherwise seems legit.

[scsmithr]

I would not put the great expectations dependency or example in the python bindings (it's all via the pg protocol and so is orthogonal. otherwise seems legit.

I believe this is just needed for the examples, and the actual requirements for the glaredb library is defined in pyproject.toml

[scsmithr]

I would not put the great expectations dependency or example in the python bindings (it's all via the pg protocol and so is orthogonal. otherwise seems legit.

I believe this is just needed for the examples, and the actual requirements for the glaredb library is defined in pyproject.toml

I just confirmed on pypi, requirements.txt doesn't impact any of the metadata for the bindings that get uploaded. Going to merge so this gets into qa soon so we can start testing more tools.