The widget was only updating on play/pause state changes, so the timer
did not advance while playback continued. Added a Handler loop in
MediaService that updates the widget every second while playback is
running and clears it when playback stops, ensuring the progress bar
refreshes regularly.
Co-Authored-By: Firehawk <firehawk@opayq.net>
Introduces a new app widget for music playback control and display. Adds widget provider classes, update manager, view factory, and related resources (layouts, colors, strings, XML). Integrates widget updates with MediaService to reflect current playback state. Updates AndroidManifest to register the widget.
