Can we remove the specific frontend source providers?

[benhammondmusic]

Now that all the providers and dataset Id naming is following a standardized pattern, most if not all provider activity should be identical across data sources, and we could rely on the parent VariableProvider to handle standardized activities, only using a child source specific provider if needed for a complex source that's significantly different

[benhammondmusic]

I started working on this, simply by moving the shared logic from getDataInternal() into the parent, and I was encountering weird errors that might have indicated circular dependencies. This part of the code is fairly complex and uses JS Classes so it'll take some work to debug. Basically trying to make changes to the brfss providers was causing errors on the HIV provider test