Set ConfigOptions extensions in TaskContext constructor

[mpurins-coralogix]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

It is impossible to create TaskContext with config options using extensions.

Describe the solution you'd like

Ability to provide default ConfigOptions extensions when creating TaskContext

Describe alternatives you've considered

Additional context

It seems that TaskContext::new is not used in datafusion code at all, but is used in ballista on executors to create TaskContext for tasks received from scheduler, and I am playing around code which would use config extensions to pass around tracing context in our project.