Enable configuration of Ask To Skip duration for intro skipper

[johnpc]

Changes:

• Added a new setting in the Playback Preferences screen that allows users to customize how long the Skip Intro/Outro button stays on screen.
• The setting provides a slider to adjust the duration from 3 to 20 seconds, with a default of 8 seconds. This gives users more control over their viewing experience based on their reaction speed and preferences.

Issues:

• https://features.jellyfin.org/posts/3035/intro-outro-button-visibility-time

NOTE: This is my first contribution to jellyfin-androidtv. Please let me know if you have any feedback I am happy to make whatever updates are desired by the maintainers.