TAD: Make supported alarms configurable #690
Description
Currently the time-alarm device is hardcoded to have a particular capability mask (which timers are supported, whether or not millisecond-resolution clocks are supported, etc). Ideally this would be configurable, but that configurability has a couple dependencies, so we need to circle back on that once those dependencies are implemented.
Requires #687 to allow the logic of which tasks to start to be pushed into the TAD module
Requires #689 to allow checking which power sources are present on the system to validate the user-requested config