Make OptimizerConfig a Trait #4631
Description
Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Similar to #4629
Describe the solution you'd like
The proliferation of various different config structs (#4349) is confusing, not to mention error prone (#4630)
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
Additional context