* Alpha order sub-menus
* WIP Getting Remote types outlined
* WIP building UI
* WIP adding RemoteButton control
* WIP Fix build
* WIP Basic editing support
* Border on the active button
* Make TxView2 sane
* Add easier RGB color creation from uint32
* Center some button icons
* WIP Remote - main UI
* WIP main UI mostly working, can send
* Add 'join' utility
* WIP save/load
* Pre-alloc buttons to prevent focus dangling
* Alpha order settings/debug pages
* Add UI for picking capture and set frequency
* WIP Getting really close now
* Fix path for init name
* Some fit & finish
* add a little Stash utility.
* add radio state RAII helper.
* first part of radio_state changes
* add radio_state_ to rest of apps
* fix freq_step and format
* fix unused ui_sigfrx: corrected sample rate, added back freq setting
* Allow apps to not use persisted freq.
* use rx_freq for RX mode
* remove direct call to persistant_memory in tx_model
* app_setting defaults, and tx_view to use ctor value
* Make default constructor for touch calibration
* Add persistent memory check value and access abstraction.
* Add persistent data_t default constructor with reasonable defaults.
* serial_format_t default constructor.
* Tidy up backlight timeout type.
* Add persistent data struct version/checking.
* Make range_t functions constexpr.
* Move ui_config and functions into class.
* Add backlight_config_t struct, separate enable and time settings.
