feat(robot-server): add deck_configuration notification publisher

[mjhuff]

Closes EXEC-168

Overview

Add a deck configuration publisher to the robot server. This will enable the app to avoid polling for updated deck config state. An app-sided PR will follow this one.

Test Plan

• On the desktop app/ODD, mess around with the deck config. Any time you update the deck state, you should see an MQTT refetch flag published on the robot-server/deck_configuration topic. Postman is the easiest way to visualize this.

Changelog

• Add a deck configuration publisher to the robot server.

Review requests

• Double check me on the store.py changes. I don't think there's anything weird/wrong here, but it would be nice for a python dev to confirm. We just publish a refetch flag any time the store is updated, and I believe I've covered the only spots updates happen.

Risk assessment

low - this is about as vanilla as you can get for a notification publisher

[TamarZanzouri]

I was not part of the initial notifications but changes make sense to me and match other notifications