Fix/unity web view

[Ahmadre]

Description

This fixes:

• Delays and not recognizable UnityWidget after messages were sent to Unity
• Unnecessary Toolbars and Styles in Unity itself -> Unity is now Fullscreen like Mobile View
• Examples by using PointerInterceptor to intercept Taps on HTMLElementView -> Fixes stacked widgets to get Pointer Taps!
• Add note to KnownIssues section for users with example screenshot on how to Use PointerInterceptors

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• 🧹 Code refactor
• 📝 Documentation

[Ahmadre]

@juicycleff can I publish new *.unitypackage here in /unitypackages? Because I only updated the Build.cs and NativeAPI.cs in example folder, but these fixes needs to be packed in a new unitypackage

[Ahmadre]

All good, I know now how to package this :3