Changes

Add xAPI extension functions required for common use cases.

Remove some unnecessary functions that were introduced with the assignment merge.
 (commit: 4a012c9)

Improvements for Xapi based data handling : work in progress.

Add UiText support for LangMaps. Put OpenEel constants into one logical place.
 (commit: 6d34bd4)

Add environment variables that can be used to set the url of the test app manifest for maestro testing.
 (commit: e61e79f)

Update ci-run-maestro to pass TEST_APP_URL argument through.
 (commit: 9f4649e)

Improve error message logging in xapi_assignable_unit.js .
 (commit: 0595679)

Initial implementation of lang map edit field.
 (commit: 2ceac40)

Initial implementation of lang map edit field.
 (commit: 14511ab)

Fix AssignmentEditScreen

Changing description would change title.
 (commit: 42d1b44)

Remove use of old langmap getTitle function.

Fix composable langmapstring function.
 (commit: 55b6ec9)

Migrate class list and detail views to use xAPI statements instead of legacy `Clazz` data models.

- Replace `Clazz` model usage with `XapiStatement` in `ClazzDetailViewModel` and `ClazzListViewModel`.
- Update `ClazzDetailViewModel` to fetch class data via `schoolDataSource.xapiStatementsResource` using the activity ID from navigation.
- Refactor `ClazzListViewModel` to filter and display the most recent class-related xAPI statements instead of using a paging source.
- Update `ClazzDetailScreen` and `ClazzListScreen` to bind data from xAPI statement definitions (title and description).
- Update navigation routes and related use cases to utilize activity IDs.
 (commit: 7409512)

Refactor class management to support multi-language xAPI activity names and descriptions.

- Replace custom `classDefinitionTitle` and `classDefinitionDescription` extensions with standard `objectActivityNameOrNull` and `objectActivityOrNull` from the xAPI library.
- Update `ClazzEditScreen` to use `LangMapTextField` for editing localized name and description maps.
- Update `ClazzDetailViewModel`, `ClazzListScreen`, and `ClazzDetailScreen` to handle language map conversions for UI display using `asLangMapUiText` and `langMapString`.
- Remove obsolete xAPI helper functions and constants from `XapiClassExt.kt`.
- Move `ACTIVITY_ID_PATH` to `ClazzEditViewModel` companion object.
 (commit: dc9da06)

Use `objectActivityOrNull` and `distinctByMostRecentTimestampForActivityId` extensions in `ClazzListScreen` and `ClazzListViewModel`.
 (commit: 3ff5266)

Throw `IllegalStateException` in `ClazzEditViewModel` when account data is missing during class creation or when statement data is null during save.
 (commit: e57adfe)

Refine error handling in `onClickAddPersonToClazz` and `onClickRemovePersonFromClass` within `ClazzDetailViewModel`.
 (commit: e4c644b)

Simplify logic for title and description in `ClazzDetailViewModel` and `ClazzDetailScreen`.
 (commit: a5db38c)

Simplify logic for title and description in `ClazzDetailViewModel` and `ClazzDetailScreen`.
 (commit: 7786c96)