Fixes#10431.
The `km_core_` prefix has been removed from internal-only functions, and
these function declarations moved to context.hpp.
The functions have not been moved from km_core_context_api.cpp at this
stage.
Rewrote the function documentation in Javadoc style comments for the
internal use functions.
Removes the Windows-only kmcomp.exe dependency, and instead now uses
kmc to always build .kmx files for unit tests.
debug_api.cpp was using an outdated .kmx file, which is why the line
number offsets have changed. (The perils of binary fixtures!)
- uint16_t
- defined km_kbp_event_flags to define the bitfield
- bitfield has value KM_KBP_EVENT_FLAG_TOUCH for touch events
- ignored everywhere, currently
