Make Time function compatible with PostgreSQL

[terminalnode]

Related issue on YouTrack (opened by me): https://youtrack.jetbrains.com/issue/EXPOSED-276/Time-class-is-not-compatible-with-PostgreSQL

Not sure what the practice for testing these are, if something needs to be added. I can't seem to run the relevant tests locally without running out of memory, presumably due to all the databases containers being started.

[terminalnode]

While the related Date class does work in Postgres, it could also be changed to ::date for consistency. But I think that's more of a stylistic choice, so not including that unless asked to. :-)

[terminalnode]

Any progress on this?

[joc-a]

Fixed here