There are a lot of details to cover here--see the PR for the complete
context.

- Add missing codeowner
- Add support for configuring base branch reference
- Update CI for dev/alpha AAB builds to use 'develop' since there's no
  origin configured by default in the workflows

This is needed to open a PR on GitHub. This commit is being made so that
the PR can start off in a broken Actions state.

This also initially disables most non-Bazel workflows to make workflow
iteration faster and less impacting on other team members.

This introduces a new mechanism for passing lists of tests to sharded
test targets in CI, and hooks it up. No actual sharding is occurring
yet. This led to some simplifications in the CI workflow since the
script can be more dynamic in computing the full list of targets (which
also works around a previous bug with instrumentation tests being run).
Java proto lite also needed to be upgraded for the scripts to be able to
use it.

More testing/documentation needed as this functionality continues to
expand.

This simply partitions bucketed groups of targets into chunks of 10 for
each run. Only 3 buckets are currently retained to test sharding in CI
before introducing full support.

Fixes some caching bucket and output bugs. Also, introduces while loop &
keep_going to introduce resilience against app test build failures (or
just test failures in general).

Also, enable other workflows.

Note that CI shouldn't fully pass yet since some documentation and
testing needs to be added yet, but this is meant to be a more realistic
test of the CI environment before the PR is finished.

Adds a human-readable prefix to make the shards look a bit nicer.

Also, adds more fine-tuned partitioning to bucket & reduce shard counts
to improve overall timing. Will need to be tested in CI.

A newly computed variable wasn't updated to be used in an earlier
change.

Add docstrings for proto.

…d-flavors

…/oppia-android into add-bundles-proguard-build-flavors

See
#3757 (comment)
for context.

…d-flavors

…d-flavors

Neither 'mv -t' nor piping to mv work on OSX so we needed to find an
alternative (in this case just trying to move everything). This actually
works a bit better since it's doing a per-file move rather than
accommodating for files that shouldn't be moved (which isn't an issue
since the destination directory is different than the one containing the
AAB file).

…-translations

Documentation, thorough tests, and detailed description of these changes
are still needed.

This demonstrates working string selection for system-based and
overwritten app languages, including necessary activity recreation &
layout direction overwriting.

This also includes a bunch of Dagger infra refactoring so that some app
layer packages can now be modularized (including the new packages).

…o localization-part5-introduce-app-string-translations-support-and-refactor

This involves MANY broad changes to ensure consistent string retrieval
(for arrays and plurals), formatting, and string transformations
throughout the codebase. Some extra patterns to added to fix things that
were needed, and a few issues were fixed along the way.

Also includes fixing circular dependency issue by splitting out some of
the locale components to be part of utility rather than domain (so that
utiltiy and other packages can depend on MachineLocale).

…o localization-part5-introduce-app-string-translations-support-and-refactor

…e-test-batching

…d-flavors

Also, performance improvements for the regex check.

…les-proguard-build-flavors

…mbine-prework-and-translations

…ch-combine-prework-and-translations

Add some other needed functionality.

…o localization-part5-introduce-app-string-translations-support-and-refactor

…x-checks-for-translated-strings

…ch-combine-prework-and-translations

…lization-part4-introduce-controller-and-protos

…o localization-part5-introduce-app-string-translations-support-and-refactor

Conflicts:
	scripts/assets/file_content_validation_checks.textproto
	scripts/src/java/org/oppia/android/scripts/regex/RegexPatternValidationCheck.kt

Also, abstract ContentLocale for consistency & to disallow direct
construction.

Silence one file missing a test suite (since it doesn't need one).

Also, some tweaks to the language support definitions.

Included introducing a new general purpose utility for testing data
providers + its own test suite.

Also, add test version of AssetRepository.

Add new placeholder tests & update all tests project-wide to make sure
that they build.

Included some shadow refactoring, and introducing new test-only
resources.

…nd-protos

…o localization-part5-introduce-app-string-translations-support-and-refactor

Conflicts:
	app/src/main/java/org/oppia/android/app/application/ApplicationComponent.kt
	scripts/assets/file_content_validation_checks.textproto
	utility/src/main/java/org/oppia/android/util/locale/OppiaLocale.kt

Make all non-app layer targets build (haven't run tests yet).

Audited existing bidi wrapping cases & converted strings over to being
%s-only.

All non-app tests confirmed as passing.

Introduce new TestActivity for scaffolding all non-activity tests.

Add fixes for question player & old answer displaying.

Add fix for guaranteed crash on startup after some changes between now &
the first build of MR3 (dueu to extra updates in
SplashActivityPresenter).

Address temporary TODO by removing kdoc.

Required an update to truth proto lite import (due to an incompatible
update in the common Truth dep).

Other miscellaneous fixes needed to support new tests.

1. Introduce proper API compatibility for LocaleController
2. Ensure TranslationController is scoped (breaks test in downstream PR)

…o localization-part5-introduce-app-string-translations-support-and-refactor

Only remainder is a test suite whose tests need to be migrated.

…nd-protos

…o localization-part5-introduce-app-string-translations-support-and-refactor

Conflicts:
	app/src/main/res/values-pt-rBR/strings.xml

…nd-protos

…o localization-part5-introduce-app-string-translations-support-and-refactor

Conflicts:
	app/BUILD.bazel

…nd-protos

…o localization-part5-introduce-app-string-translations-support-and-refactor

…ranslations-support-and-refactor

Conflicts:
	app/src/sharedTest/java/org/oppia/android/app/testing/ImageRegionSelectionInteractionViewTest.kt