feat: Add stylized subtitles toggle

[Himanth-reddy]

Addresses stylized anime subtitles request from #180

Description

Adds a new setting to enable stylized subtitles for ASS/SSA subtitle formats.

Changes

• Added subtitle_stylized string resources.
• Added subtitleStylized preference to PlayerUiState and SettingsUiState.
• Updated PlayerScreen to conditionally apply setApplyEmbeddedStyles(true) and setApplyEmbeddedFontSizes(true) on SubtitleView when enabled. When disabled, the fallback custom sizes and colors via CaptionStyleCompat are used.
• Updated SettingsScreen to include the Stylized Subtitles toggle in both the TV layout and Mobile layout, properly managing D-pad navigation indexes for the TV layout.

[ProdigyV21]

Nice feature, especially for anime ASS/SSA subtitles. The merge build passes, but I think two things should be fixed before merging.

1. Plain subtitles can ignore the existing user subtitle appearance settings
   When subtitleStylizedPref is true, PlayerScreen only enables embedded styles/font sizes. It does not apply the user’s normal subtitle size/color/style as the fallback style. Since this setting defaults to true, normal SRT/VTT subtitles may stop respecting the existing subtitle appearance settings. The comment says user prefs are used as fallback for plain SRT/VTT, but the code only applies them in the non-stylized branch.

Please apply the user CaptionStyleCompat/fixed text size first, then enable embedded styles/font sizes only when stylized mode is on.

2. New setting does not cloud sync
   toggleSubtitleStylized() calls syncLocalStateToCloud(), but CloudSyncRepository.CloudProfileSettings does not include/export/import subtitleStylized. So the setting is local-only and will not restore on another device.

Please add subtitleStylized to the cloud profile settings model and read/write subtitle_stylized during export/import.

Checks passed:

• git diff --check
• :app:compileSideloadDebugKotlin
• :app:compilePlayDebugKotlin

[Himanth-reddy]

Addressed both review items in Himanth-reddy:feat/stylized-subtitles.

• Plain SRT/VTT fallback styling now applies the user subtitle CaptionStyleCompat and fixed text size before toggling embedded ASS/SSA styles, so stylized mode can still honor user appearance settings for plain subtitle formats.
• Added subtitleStylized to CloudProfileSettings and wired subtitle_stylized through cloud export/import so the setting restores across devices.

Checks passed locally:

• git diff --check
• ./gradlew :app:compileSideloadDebugKotlin
• ./gradlew :app:compilePlayDebugKotlin