1.3 - Add FFmpeg support

• Add ffmpeg support
• Add video resolution options
• Add multi-video download/ pause
• Fix bugs

1.2 - Migrate to Flutter 2.2 with null safety support

• Fix crash when first time launch the app
• Fix wrong cookies file when download facebook private

1.1 - Add Mac OS Support

• Mac OS Support
• Add open video location
• Add Github link
• Fix bugs