Simple Video Resizer v2.0.0

• Major evolution from 'discord-video-compressor'.
• New Features:
  • Selectable compression ratios (1/2, 1/3, 1/4).
  • Manual target size input (MB).
  • Real-time ETA and file size estimation.
  • Performance optimization with FFmpeg 'faster' preset.
• Infrastructure: Added PyInstaller spec, Inno Setup script, and MIT License.