Improve controls usability in the TV demo

[MGaetan89]

Pull request

Description

This PR improves the usability of the controls in the TV demo of Pillarbox.

Changes made

• When pressing the enter button, the controls are displayed immediately.
• When the controls are made visible, the play/pause state is no longer modified.
• While navigating in/using the controls, they are no longer hidden automatically.
• Refresh the design of the chapters.
• Add transition when the current chapter changes.

New chapter design

Chapter change animation

Screen_recording_20240501_112040.webm

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	46.59% -0.2%	🟢
Files changed	0%	🟢

Module	Coverage
:pillarbox-ui	0% -0.77%	🟢

Files

Module	File	Coverage
:pillarbox-ui	DelayedVisibilityState.kt	0% -4.61%	🟢