Separate guest/host tracking + unaligned protection (#6486)

* WIP: Separate guest/host tracking + unaligned protection

Allow memory manager to define support for single byte guest tracking

* Formatting

* Improve docs

* Properly handle cases where the address space bits are too low

* Address feedback

src/Ryujinx.Memory/Tracking/RegionFlags.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Ryujinx.Memory.Tracking
+{
+    [Flags]
+    public enum RegionFlags
+    {
+        None = 0,
+
+        /// <summary>
+        /// Access to the resource is expected to occasionally be unaligned.
+        /// With some memory managers, guest protection must extend into the previous page to cover unaligned access.
+        /// If this is not expected, protection is not altered, which can avoid unintended resource dirty/flush.
+        /// </summary>
+        UnalignedAccess = 1,
+    }
+}