When starting the app, actual tx gain is 47 while the ui shows 10. "Increasing" gain to 11 takes effect, reducing actual gain as displayed in UI. This change makes the UI gain value consistent with actual tx gain.
* Use receiver/transmitter models everywhere
* Run formatter
* Fix a copy-paste bug, make transmitter_model actually set tx_gain.
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Co-authored-by: kallanreed <kallanreed@outlook.com>