feat(Prime Video): Add Playback speed patch

[therealsuji]

I made this patch during the weekend, and this is the initial working version

• Adds the playback support for 1x,1.5x and 2x

• The button opens up a dialog with radio buttons just like in subtitles

• Opening up the dialog pauses and resumes the playback when the dialog is closed.

• Selecting an item will set the playback rate

• Drawable icon to match other two icons in the top overlay

• The player instance is hooked in from PlaybackUserControlsFeature -> prepareForPlayback

• The dialog overlay is added at PlaybackUserControlsFeature -> initialize

Tested on 3.0.412.2947

[therealsuji]

Related to feature #5443

[Copilot]

Pull Request Overview

Adds support for 1×, 1.5×, and 2× playback speeds to the Prime Video player by injecting a new button into the user controls and wiring it up to an extension class.

• Hooks into PlaybackUserControlsFeature.initialize and prepareForPlayback to register the extension.
• Defines fingerprints for the target methods and exposes the patch through the API.
• Implements the UI overlay, dialog, and icon in the extension module.

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
patches/src/main/kotlin/.../PlaybackSpeedPatch.kt	Injects calls to initialize the overlay and set the player instance
patches/src/main/kotlin/.../Fingerprints.kt	Adds fingerprints for the initialization and playback methods
patches/api/patches.api	Registers the new getPlaybackSpeedPatch entry
extensions/primevideo/stub/src/.../Player.java	Defines the Player interface with playback rate methods
extensions/primevideo/stub/src/.../VideoPlayer.java	Adds pause, play, and isPlaying to VideoPlayer stub
extensions/primevideo/src/.../PlaybackSpeedPatch.java	Implements the speed button UI, dialog, and icon drawable

Comments suppressed due to low confidence (2)

extensions/primevideo/src/main/java/app/revanced/extension/primevideo/videoplayer/PlaybackSpeedPatch.java:102

• Method name changePlayBackSpeed has inconsistent capitalization of "Back". Consider renaming to changePlaybackSpeed for readability and consistency.

    private static void changePlayBackSpeed(TextView speedText) {

extensions/primevideo/src/main/java/app/revanced/extension/primevideo/videoplayer/PlaybackSpeedPatch.java:23

• [nitpick] Consider adding unit or integration tests for the playback speed controls and UI interactions to ensure the new feature works reliably and prevent regressions.

public class PlaybackSpeedPatch {

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