v0.0.1 Let's Start

This release of flutter_acrylic adds:

• Added Acrylic class to use aero or acrylic blur effects on Flutter Windows.
• Added following effects to the plugin:
  • AcrylicEffect.disabled.
  • AcrylicEffect.solid.
  • AcrylicEffect.transparent.
  • AcrylicEffect.aero.
  • AcrylicEffect.acrylic.
• Other features.
  • Added Window.enterFullscreen & Window.exitFullscreen methods to make Flutter Window fullscreen.