Implement checking of FrameReceiver status before starting acquisitions

Previously the FrameProcessorAdapter performed checks via the FrameReceiverAdapter that the frameReceiver has all of its free buffers available to avoid confusing failures. This was removed [here](https://github.com/odin-detector/odin-data/pull/370/files#diff-d7b077e0619e5c4e87a88096ee3e99eac961c58f2267b795e8a720bea30bb517L211).

The generated `start_writing` method should be disabled (`.enabled = False`, e.g. [here](https://github.com/DiamondLightSource/FastCS/blob/88f80a2934686c0be71f7eeb5cb9c6e8ce51b9cb/src/fastcs/transport/epics/ioc.py#L122) and a `@command` method added to FrameProcessorController the does the checks and then calls the `start_writing` method, which is still available internally, just not exposed to the transport layer (I think).

## Acceptance Criteria
- `FrameProcessorAdapterController` does not allow start writing if frame receiver status is bad.