Update 5.1.0

KineMaster Update 5.1.0
Feature Updates:
- Adds the Slip tool to adjust a video's start and end positions within a fixed video duration
- Adds support to save as animated GIF, in addition to MP4
- Supports snapping of layers to guidelines and square cropping
- Supports replacement of layer assets
- Supports text sticker assets
- UX/UI Changes:
- Supports adding multiple audio files at once
- Supports setting the default transition duration when creating a new project