* Use signingConfig if locally available.
Make it easier for devs to test release builds.

* Remove empty signing scope

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

* Move AppConfig related code into it's own package.
* Use "files" instead of "cache" for storing our AppConfigApiTest.
* Add "files" to "cache" migration.
* Refactor CDN related code into an independent "environment module".

TODO: UnitTests, Fallback behavior even if cached AppConfig is stale.

* Further structure refactoring and unit test for app config cache migration.

* Added config fallback behavior for all cases + additional tests.

* Improve code readability.

* First POC for multi-environment support.

* logic for ACME test Countries toggle button in Dev menu

* ACME Test Countries dev menu

* Additional clean up and refactoring on build constants.

* Cleaned up the test fragment a bit.

* Fixed detekt issue

* Fix flaky test that depends on build variant.

* Let the test fragment show us the actual environment we toggled to.

* Changes upon review

* Address PR comments.

Co-authored-by: Rituraj Sambherao <git.rituraj.sambherao@gmail.com>

Add the new local environment file `test_environments.json` to the .gitignore as it should not be checked in. (#1247)

* Ship a common codeStyle that matches KLint.

* The config for newlines at end of files should also have a new line at it's end :D.

Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>
Co-authored-by: Jakob Möller <jakob.moeller@sap.com>