* AlarmController: Add saving alarm time to file
Save the set alarm time to the SPI NOR flash, so it does not reset to
the default value when the watch resets, e.g. due to watchdog timeout
or reflashing of a new version of InfiniTime.
Just like the `Settings.h` `LoadSettingsFromFile()` the previous alarm
at boot (if available) and `SaveSettingsToFile()` the current alarm when
the `Alarm.h` screen is closed (only if the settings have changed).
The alarm-settings file is stored in `.system/alarm.dat`. The `.system`
folder is created if it doesn't yet exist.
Fixes: https://github.com/InfiniTimeOrg/InfiniTime/issues/1330
* alarmController: close .system dir after usage
Close the `lfs_dir` object for the `.system` dir after usage. Otherwise
on the second changed alarm the system will lockup because the `.system`
dir is already open and was never closed.
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Co-authored-by: Galdor Takacs <g@ldor.de>
A list of "user applications" is built at compile time. It contains all the info needed to create the application at runtime (ptr to a create() function) and to display the app in the application menu. All applications declare a TypeTrait with these information.
When a new app must be loaded, DisplayApp first check if this app is a System app (in which case it creates it like it did before). If it's not a System app, it looks for the app in the list of User applications and creates it if it found it.
Those changes allow to more easily add new app and to select which app must be built into the firmware.
Switch to C++20 (and fix a few issues in SpiMaster.cpp and Watchdog.cpp.
Don't use relative imports like `../foo.h` as those depend on the
relative position of both files. Rather than that use imports relative
to the `src` directory, which explicitly is part of the include
directories.
Previously, pressing the back button would close the alarm app anyway. Now if you press on it and the popup with information is open, it will first close and the second press will close the application
