Some refactoring and minor bug fixes

Assets/Scripts/Utility/Extensions/LayerMaskExtensions.cs

...ts/Scripts/Utility/Extensions/LayerMaskExtensions.cs.meta

Assets/Scripts/Utility/Extensions/MathfExtensions.cs

Assets/Scripts/Utility/Extensions/MathfExtensions.cs.meta

Assets/Scripts/Utility/Extensions/RendererExtensions.cs

Assets/Scripts/Utility/Extensions/RendererExtensions.cs.meta

Assets/Scripts/Utility/Graph.cs

Assets/Scripts/Utility/Graph.cs.meta

Assets/Scripts/Utility/IJSONsavable.cs

Assets/Scripts/Utility/IJSONsavable.cs.meta

Assets/Scripts/Utility/Math3d.cs

Assets/Scripts/Utility/Math3d.cs.meta

ProjectSettings/BurstAotSettings_Android.json

Unity.gitignore

Windows.gitignore

macOS.gitignore