grpc_servicer should use *args to pass positional parameters

[bkeryan]

Tech Debt

The MeasurementService.configuration_parameter decorator describes positional parameters in order, but grpc_servicer uses inspect.signature to look up the parameter names so that it can use **kwargs to pass them:

https://github.com/ni/measurementlink-python/blob/main/ni_measurementlink_service/_internal/grpc_servicer.py#L98
https://github.com/ni/measurementlink-python/blob/main/ni_measurementlink_service/_internal/grpc_servicer.py#L245

Passing positional parameters with *args would be simpler and have slightly lower overhead.

AB#2457623

AB#3037070

[bkeryan]

This also affects whether the measurement function's parameter list is allowed to contain keyword-only parameters, positional-only parameters, *args, or **kwargs.

It could make sense to continue using inspect.signature, but build up separate args and kwargs based on parameter.kind:

• POSITIONAL_ONLY, POSITIONAL_OR_KEYWORD -> args
• KEYWORD_ONLY -> kwargs
• VAR_POSITIONAL, VAR_KEYWORD -> ignored?