Refreshes all of the public API header documentation so we have a single
source for the documentation -- the keyman_core_api.h header. A lot of
reformatting but very little change in terms of content.

This is converted into Markdown by api-header-extractor, and the results
can be copied to help.keyman.com.

Will only do the main keyman_core_api.h for v17 release, in interests of
time. The other headers are primarily internal only and have many
deprecated functions also.

Will also leave the full automation of the documentation generation to a
future PR. The script will be there but it won't run during build for
now.

Fixes #10580.

chore(web): improve the clarity of hints on OSK for Android

I found the hints too hard to see on my phone, so this increases size of
the hint from 0.5em to 0.75em, and changes color from #aaa to #ccc, on
Android.

auto: increment beta version to 17.0.286

fix(windows): GetKeyboardLanguage exits early on an invalid keyboard ID 

auto: increment beta version to 17.0.285

fix(developer): normalize all input paths in .kps compiler

docs(developer): kmc-package api documentation

docs(developer): kmc-keyboard-info api documentation

docs(developer): kmc-model-info api documentation

docs(developer): kmc-model api documentation

fix(developer): Treat Right Shift as Shift in debugger

fix(developer): kmc keyboard info compiler no kmp error

chore(web): updates mtnt model used by test page

fix(web): globe key highlighting

auto: increment beta version to 17.0.284

fix(common): missing script exec bit

refactor(android/app): Move storage permission checks

refactor(oem/fv/android): Install fallback keyboard

fix(developer): fix for errant \uXXXX error

fix(developer): search-term quote replacement was not global

fix(android): fixes context-change detection for repeated-char cases

Fixes #10942.