auto: increment master version to 15.0.44

fix(windows): make keymanx64 responsible for its own lifecycle

chore(windows): add telemetry to trace crash on exit

fix(windows): avoid disabling Keyman when speech recognition starts

chore(android/app): Always use offline help

feat(android/app): Add telemetry for launching WebBrowserActivity

This commit is not to cherry-pick to stable-14.0

chore(mac): update requirements to include Big Sur

auto: increment master version to 15.0.43

chore(common): Check in crowdin files for Azerbaijani

auto: increment master version to 15.0.42

chore(linux): Add support for Ubuntu 21.04 (hirsute)

Closes #5021.

auto: increment master version to 15.0.41

chore(common): update stable history for 14.0.273

Relates to #4700.

This simply adds some debug logging so that when the current crash
occurs, we can discover which windows have failed to automatically
close, which should give us enough detail to be able to reproduce the
problem, hopefully, and fix it.

auto: increment master version to 15.0.40

Fixes #4976.
Fixes KEYMAN-WINDOWS-2K.
Fixes KEYMAN-WINDOWS-3F.
Fixes KEYMAN-WINDOWS-5A.
Fixes KEYMAN-WINDOWS-3E.

This fix reworks keymanx64's lifecycle, moving responsibility for
process shutdown from keyman.exe to keymanx64.exe.

This eliminates the need for interprocess communication, and simplifies
the startup and shutdown of keymanx64.exe. Removing this means that we
can more safely handle situations where two instances of keymanx64 may
be started, as one of them will rapidly terminate when it discovers that
its parent process has disappeared.

Fixes #4965.

When speech recognition is enabled, it sometimes activates after a
Keyman keyboard is selected. This would cause Keyman to think it is
being deactivated. We needed to check in
`CKMTipTextService::OnActivated` that it was a keyboard-type TIP that
was being activated, and only deactivate the Keyman hooks in that
situation.

This commit also adds a little logging helper function, and removes an
unused variable `guidActiveProfile`.

chore: support for xcode 12

auto: increment master version to 15.0.39

fix(android/engine): Fix toHex() for null string