Define the reporters as enum values and use those as flag values

[leodido]

Describe the feature or problem you’d like to solve

We wanna have a framework to scale the number of reporter flag values in the future.

We also wanna have a builtin mechanism to automatically validate the values users provide for reporters.

Proposed solution

I propose to make a ReporterType enum type and use it (and its values) as flag values for --reporter.

Additional context

NONE