…enderTarget preferred SurfaceFormat

The IsActive on windows platforms is false when app is minimized or lost
focus. There is no way to tell if the app is minimized or Visible.

Write directly to the Mapped Buffer

Implement Game.InactiveSleepTime
Reset IsRunningSlowly after 5 frames

Need to test other BoundingFrustum/BoundingBox as well...

…w.KeyDown event

Replace SpriteFont.Characters, SpriteFont.GetGlyphs(),
and SpriteFont.Glyphs with GlyphCollection.
Remove Glyph.Character.

…fer size.

-Revert PR-5442.
-Early initialization of NativeOrientation.
-Fine tune resolution for automatic orientation (45 degrees angle).
-Shockproof automatic orientation (0.5sec delay).
-check valid ScreenOrientation in MainActivity setup.
-remove ResetClientBounds() Hack.

Requires <uses-permission
android:name="android.permission.READ_PHONE_STATE" /> in
AndroidManifest.xml

-Remove Initialize(). Dispatcher doesn't need to initialize itself.
-Remove DoUpdate()
-Add OnUpdate event to dispatch 'Update' message.
-Convert to Singleton

fix resource leaks, optimize, reduce memory garbage and make it thread safe.
fix Pan and Apply3D.
fix BufferNeeded.
remove SoundEffect.FromFile()

…ta()/GetData()/Texture2D/3D/Cube SetData()/GetData()

 hide IGraphicsDeviceManager() methods
 implement Disposed, OnPreparingDeviceSettings and IGraphicsDeviceService events
 remove _shouldApplyChanges checks
 don't swap PreferredBackBufferWidth/Height

-dirty flag for PlatformApplyPrimitiveType
-disable unnecessary apply of Vertex/Index buffer
-_enabledVertexAttributes as a HashSet
-restore set of  _vertexBuffersDirty flag

* refactor GameLoop

* move _gameTime and _gameTimer to platform

* rename _isDisposed
* TickExiting
* remove OnIsMouseVisibleChanged
* Exit() and SuppressDraw()
* remove unused fields and methods
* move fields
* rename _currElapsedTime and _prevElapsedTime
* move Tick()
* rename EndDraw
* move services, components, content
* rename GameStrategy
* rename ConcreteGame
* rename Game.Strategy
* remove partial
* remove PlatformCreate()
* sealed ConcreteGame

* rename GameStrategy.cs
* rename ConcreteGame.cs

* move RunOneFrame

* remove ANDROID_BeforeRun

* rename msbuildwin

* build iOS

* build BlazorGL

* build DesktopGL

* remove unused events

* play catch

* rename BlazorGL platform

* rename BLAZORGL Constant

* add Google Cardboard library

* Cardboard project

* build Cardboard

* whitespaces

* remove GameWindow BeginScreenDeviceChange and EndScreenDeviceChange

* default implementation for GameStrategy BeginScreenDeviceChange and EndScreenDeviceChange