Add tests to pillarbox-player

[MGaetan89]

Pull request

Description

This PR follows up on what has been initiated in #430, and add even more tests to the pillarbox-player module.

Changes made

• Add new tests to the pillarbox-player module
• Remove mocking of the Android SDK in the pillarbox-core-business, and pillarbox-player modules, to take advantage of Robolectric instead
• Fix an issue in PillarboxMediaDescriptionAdapter where the Bitmap was not returned after being downloaded for the first time

Checklist

• Your branch has been rebased onto the main branch.
• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).
• All pull request status checks pass.

[github-actions]

Code Coverage

Overall Project	20.86% -0.83%	🟢
Files changed	13.19%	🟢

Module	Coverage
:pillarbox-analytics	53.47% -1.05%	🟢
:pillarbox-player	24.75% -2.44%	🟢

Files

Module	File	Coverage
:pillarbox-analytics	ComScoreSrg.kt	0% -7.12%	🟢
:pillarbox-player	MediaItemTrackerRepository.kt	100%	🟢
	MediaItemTrackerList.kt	96.23%	🟢
	PendingIntentUtils.kt	0% -64.71%	🟢
	TrackSelectionParameters.kt	0%	🟢
	PillarboxMediaSessionService.kt	0% -2.96%	🟢
	PillarboxMediaLibraryService.kt	0% -13.39%	🟢
	PillarboxMediaDescriptionAdapter.kt	0% -19.79%	🟢
	CurrentMediaItemTracker.kt	0% -6.93%	🟢