Extract MTProxy endpoint recording logic into MtProxyEndpointRecorder and MtProxyProbeLease helper classes, and introduce EmojiPanelAnimationScheduler for controlled animation playback in emoji panels.
Key changes:
- Move endpoint failure/handshake/data-path recording from ConnectionSocket to MtProxyEndpointRecorder
- Replace probe lease management methods with MtProxyProbeLease member class
- Add EmojiPanelAnimationScheduler to manage GIF/sticker playback based on visibility and scroll state
- Add animation FPS limiting and invalidation delegate hooks to ImageReceiver
- Update Java proxy event handling to route connected/connect_start/usable_success through ProxyEventReducer
- Update verification tools to reflect new architecture
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