GeneralRunConfig Which Selects Appropriate Config Based on Hardware #900

User story

As a user, I want to be able to test a model on different hardware while minimizing changes to the code. One component that needs to be changed when switching hardware is the RunConfig. Having a GeneralRunConfig class that can return an instance of the appropriate config as determined by a supplied hardware parameter.

Conditions of satisfaction

• Users can select GeneralRunConfig class that takes a hardware parameter
• GeneralRunConfig also accepts all parameters of the normal run configs
• Based on the hardware parameter, GeneralRunConfig selects the appropriate config and creates an instance of the config with the relevant parameters.

Acceptance tests

• Test that instances created have the correct return type. (GeneralRunConfig(hardware=CPU) -> Loihi2SimCfg, etc.)
• Parameters are correctly filtered so that parameters not accepted by the resulting class are ignored.