Load runtime configuration from environment vars, configuration file, or command line

[jdye64]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
A Physical plan that is executed has several parameters that would be good to have a way to control via configuration variables. We should have a mechanism, sort of like Ballista, where users can set Environment Variables, load a TOML configuration file, or pass in parameters to function calls via a Python dict with key/value pairs.

Describe the solution you'd like

• Reasonable default values for configurations
• File based configurations possible for overrides
• Functions that trigger "runs" to have a Python Dict that allows for override of global configuration values.

Describe alternatives you've considered
None

Additional context
Add any other context or screenshots about the feature request here.