feat(oem/fv/ios): Dictionary Support

fix(android/engine): Clear WebView cache on package install

auto: increment beta version to 15.0.224

fix(web): ios popup positioning and style

fix(windows): make long menus scroll in Configuration

fix(mac): invalid keyboard breaks configuration 🍒

auto: increment beta version to 15.0.223

chore(common): Update Hausa strings

fix(windows): put correct HK_ALT flag for modifier

auto: increment beta version to 15.0.222

Fixes #6098.

If the list of languages is too long to fit, the menu now dynamically
adds a scroll bar.

As a bonus:
* The language names are sorted (non-Latin scripts at bottom for now)
* `nmake install` works again (in kmshell, presence of `install` folder
  was confusing it)

Fixes #4877.

If a keyboard is invalid for any reason (missing, wrong version),
then it would not appear in Configuration, which would break the
row indexing, causing crashes.

Cherry-picked from stable-14.0 branch.

fix(common): report more log detail in increment-version

fix(developer): structure sizes for kmcomp x64

Relates to #6391.

Adds some logging so we may be able to find out why we are getting
strange results for some PRs.

auto: increment beta version to 15.0.221

fix(android/engine): Display longpress keys during a Move gesture

feat(web): `&newLayer` and `&oldLayer`

fix(web): adjust touch alias element positioning

The iOS code was making a direct call to `keyman.core.resetContext()`
rather than to `keyman.resetContext()`. This meant that the
`OutputTarget` was not set and the `newContext` event would never be
called (as well as triggering a background warning in the language
processor "OutputTarget missing during an invalidateContext call").

Refactored to include a wrapper for `resetContext()` in ios-host.js, as
I think it's better to proxy all calls to KMW consistently through the
host javascript.

(There are a couple of other direct calls which could be cleaned up;
search for "evaluateJavaScript" to find all calls; I think we could
consider build a wrapper for all these calls?)

Adjusts the dimensions to use pixel boundaries to prevent antialiasing
for some of the key preview and longpress popups, and adjusts horizontal
positioning of key preview to center more precisely, for iOS.

auto: increment beta version to 15.0.220