Feature request: Add Pool.newConnection() which always creates a new connection, similar to Pool.logicalReplication()

[dko-slapdash]

Currently, pgwire.pool() method doesn't require awaiting (i.e. it returns a non-Promise), and this is great, because I can call it in e.g. objects' constructors.

Also, there is Pool.logicalReplication() method which is also very convenient: it always creates a new connection for streaming the changes.

But Pool can't create connections for another type of usecases: when I run a huge SELECT * FROM tbl query and want to stream the rows from it for minutes (the table is big). This also requires a new connection creation, and Pool can't do this.

I propose to close the gap and add newConnection() to Pool class. Otherwise, there is no other way to create a connection without awaiting on it (pgwire.connect() returns a Promise), and non-async connecting is a good thing to have.

Below is a code example, what I have to do - use Connection class directly (although it's not default-exported by the library). I could've used pgwire.pool() for this (with poolMaxConnections=1), but it doesn't have newConnection().