Added initial support for image layers. · vchelaru/FlatRedBall@5002b43

The following actions uses node12 which is deprecated and will be forced to run on node16: microsoft/setup-msbuild@v1.0.2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Build: Engines/FlatRedBallXNA/FlatRedBall/Graphics/Particle/EmissionSettings.cs#L361

'EmissionSettings.PixelSize' is obsolete: 'Use TextureScale instead. TextureScale = PixelSize * 2'

Build: Engines/FlatRedBallXNA/FlatRedBall/Graphics/Particle/EmissionSettings.cs#L362

'EmissionSettings.PixelSize' is obsolete: 'Use TextureScale instead. TextureScale = PixelSize * 2'

Build: Engines/FlatRedBallXNA/FlatRedBall/Graphics/Particle/EmissionSettings.cs#L513

'EmissionSettings.PixelSize' is obsolete: 'Use TextureScale instead. TextureScale = PixelSize * 2'

Build: Engines/FlatRedBallXNA/FlatRedBall/Math/Geometry/ShapeMerger.cs#L71

The variable 'shouldDebug' is assigned but its value is never used

Build: Engines/FlatRedBallXNA/FlatRedBall/TimeManager.cs#L676

Unreachable code detected

Build: Engines/FlatRedBallXNA/FlatRedBall/Math/Splines/Spline.cs#L589

Unreachable code detected

Build: Engines/FlatRedBallXNA/FlatRedBall/FlatRedBallServices.cs#L309

Unreachable code detected

Build: Engines/FlatRedBallXNA/FlatRedBall/Math/Geometry/ShapeMerger.cs#L563

The variable 'debug' is assigned but its value is never used

Build: Engines/FlatRedBallXNA/FlatRedBall/Gui/Cursor.cs#L1303

'Text.ScaleX' is obsolete: 'Use Width/2.0f instead'

Build: Engines/FlatRedBallXNA/FlatRedBall/Gui/Cursor.cs#L1304

'Text.ScaleY' is obsolete: 'Use Height/2.0f instead'

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