refactor(android): Use builder scripts

[darcywong00]

This updates the top android/build.sh to use the new builder pattern.

Targets: :engine Keyman Engine for Android :app - Keyman for Android :samples - Sample apps (KMSample1, KMSample2, KeyboardHarness) :fv - OEM FirstVoices app

The default dev build would change from: from ./build.sh -debug to ./build.sh build --debug

TODO:

• [x] Update CI Android Test-14.0 and Test-14.0: Samples and Test projects configs
• [ ] Update CI Android Release-14.0 configs (possibly have a single config step for ./build.sh clean build:engine build:app build:samples build:fv --CI --download-resources and then skip other legacy steps if exist android/.build-builder. Followed by ./build.sh publish --CI
• [ ] Test/verify publish works

@keymanapp-test-bot skip

[keymanapp-test-bot[bot]]

User Test Results

Test specification and instructions

User tests are not required

[jahorton]

See #7474 for Web's rework & the accompanying Android build-script tweaks.

Well, at least in their prospective form. There's still a bit more work to do there, too.

[darcywong00]

~I plan to abandon this PR and resume Android builder script activity off of @jahorton 's KeymanWeb builder script work (maybe #7474)~

Android TODO's

• [x] Incorporate dependency syntax for Android projects:

Android Project	Targets	Dependency
KMEA	app (itself)	@../../web (or call existing KeymanWeb build script if builder work not ready)
KMAPro	app	@../kmea
Samples	app	@../../kmea
KeyboardHarness	app	@../../kmea

• [x] OEM/FirstVoices app will be split out of the Android build.sh script and use its own builder script with dependecy on KMEA

[jahorton]

Eh, you've kept it in draft. A rebase should be fine for when the time comes; I don't expect extreme merge conflicts to arise.

[keyman-server]

Changes in this pull request will be available for download in Keyman version 17.0.66-alpha