Bug 40083: Make locale ordering in BuildConfig deterministic

Bug 40042: Add option do overwrite timestamp in extension version

Bug 40059: Use MOZ_BUILD_DATE for versionCode

At the same time we adapt MOZ_BUILD_DATE to our needs where it is
actually used and not in tor-browser-build. This gives us more
flexibility. See: tor-browser-build#40084.

Bug 40067: Fix reproducibility issue in classes2.dex

We make sure our MOZ_BUILD_DATE gets used as a source for showing date
related information on the Fenix about page.

Bug 40071: Show only supported locales

Bug 40064: Use Gecko Beta for Nightly and Debug variants

Bug 40123: Allow building the instrumented tests apks for variants other than debug

This allows to specify the variant of the instrumented tests via
a `testBuildType` gradle argument. It also applies a workaround for
a R8 issue from https://issuetracker.google.com/issues/140851070.

Bug 40143: Use deterministic date in Test apk

The build config was using Date() when generating the Test apk's
versionName.

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Co-authored-by: MickeyMoz <sebastian@mozilla.com>

Co-authored-by: MickeyMoz <sebastian@mozilla.com>

Co-authored-by: MickeyMoz <sebastian@mozilla.com>

Co-authored-by: MickeyMoz <sebastian@mozilla.com>

Co-authored-by: MickeyMoz <sebastian@mozilla.com>

Co-authored-by: MickeyMoz <sebastian@mozilla.com>

Co-authored-by: MickeyMoz <sebastian@mozilla.com>

After the update `TestCoroutineDispatcher`, `TestCoroutineScope` and
`runBlockingTest` are deprecated.
Instead of these new `TestDispatcher`, `TestScope` and `runTest` APIs are used.

Took the oportunity to also replace most of the `runBlocking` calls with the
new `runTest` specially designed for running coroutines in tests API.

* Fixup breaking changes from AppServices upgrade to 93.0.0

* android-components RemoteTabsStorage now requires a Context param

* Update Android Components version to 102.0.20220509214046

Co-authored-by: James Hugman <james@hugman.tv>
Co-authored-by: Mark Hammond <mhammond@skippinet.com.au>
Co-authored-by: Jonathan Almeida <jalmeida@mozilla.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>