Adds support for Microsoft .NET 6.0 plus load balancing support.
Features
- Added support for Microsoft .NET 6.0.
- Added KeepConnected connection string parameter to determine the number of seconds of connection inactivity before the client sends a ping request.
- Added Load Balancing support - Several hosts with their ports can now be specified in the Host parameter of the connection string.
- Added Target Session connection string parameter for managing Load Balancing functionality, possible values are SuppressLoadBalancing, Any, PreferStandby, PreferPrimary, Primary and Standby.
- Added TargetSession property to the PgSqlCommand class to provide the possibility to overwrite the behavior of the same option set in the connection object.
