Memory Changes part 2

* Slightly refactors RangeLists from the last Memory Changes MR, which fixes issue 61.

* Convert as many const size array iterators to span iterators as possible. When iterating over a const size array, every iteration created a Span, now only the first iteration does in most places.

* Now using object pooling for a few object types that were rapidly deleted and recreated.

* Converted a few flag checks to binary operations to save memory allocations.

src/Ryujinx.HLE/HOS/Services/Hid/HidDevices/NpadDevices.cs

@@ -94,6 +94,8 @@ namespace Ryujinx.HLE.HOS.Services.Hid
             primaryIndex = PlayerIndex.Unknown;
             configuredCount = 0;
 
+            Span<NpadState> nPadsSpan = _device.Hid.SharedMemory.Npads.AsSpan();
+
             for (int i = 0; i < MaxControllers; ++i)
             {
                 ControllerType npad = _configuredTypes[i];
@@ -103,7 +105,7 @@ namespace Ryujinx.HLE.HOS.Services.Hid
                     continue;
                 }
 
-                ControllerType currentType = (ControllerType)_device.Hid.SharedMemory.Npads[i].InternalState.StyleSet;
+                ControllerType currentType = (ControllerType)nPadsSpan[i].InternalState.StyleSet;
 
                 if (currentType != ControllerType.None && (npad & acceptedTypes) != 0 && _supportedPlayers[i])
                 {