Add skeleton optical core params and launch action

[sethrj]

This adds the basic structure for the optical core params and state to be used in the tracking loop, and it adds the "optical launch action" that can access both the offload data and the launch state.

[sethrj]

@amandalund Even though this doesn't have enough functionality to be useful, I think it's at a decent merging point... I think we could split up the next steps once this is in?

[amandalund]

Works for me! This is a great starting point, and now that the skeleton’s in place we can move forward with the stepping loop and modify these classes as needed as we go. Thanks!