Do not allow render targets not explicitly written by the fragment shader to be modified (#3063)

* Do not allow render targets not explicitly written by the fragment shader to be modified

* Shader cache version bump

* Remove blank lines

* Avoid redundant color mask updates

* HostShaderCacheEntry can be null

* Avoid more redundant glColorMask calls

* nit: Mask -> Masks

* Fix currentComponentMask

* More efficient way to update _currentComponentMasks

Ryujinx.Graphics.GAL/ShaderInfo.cs

@@ -0,0 +1,12 @@
+namespace Ryujinx.Graphics.GAL
+{
+    public struct ShaderInfo
+    {
+        public int FragmentOutputMap { get; }
+
+        public ShaderInfo(int fragmentOutputMap)
+        {
+            FragmentOutputMap = fragmentOutputMap;
+        }
+    }
+}