Implement JIT Arm64 backend (#4114)

* Implement JIT Arm64 backend

* PPTC version bump

* Address some feedback from Arm64 JIT PR

* Address even more PR feedback

* Remove unused IsPageAligned function

* Sync Qc flag before calls

* Fix comment and remove unused enum

* Address riperiperi PR feedback

* Delete Breakpoint IR instruction that was only implemented for Arm64

Ryujinx.Memory/MemoryAllocationFlags.cs

@@ -35,6 +35,18 @@ namespace Ryujinx.Memory
         /// Indicates that the memory block should support mapping views of a mirrorable memory block.
         /// The block that is to have their views mapped should be created with the <see cref="Mirrorable"/> flag.
         /// </summary>
-        ViewCompatible = 1 << 3
+        ViewCompatible = 1 << 3,
+
+        /// <summary>
+        /// If used with the <see cref="Mirrorable"/> flag, indicates that the memory block will only be used as
+        /// backing storage and will never be accessed directly, so the memory for the block will not be mapped.
+        /// </summary>
+        NoMap = 1 << 4,
+
+        /// <summary>
+        /// Indicates that the memory will be used to store JIT generated code.
+        /// On some platforms, this requires special flags to be passed that will allow the memory to be executable.
+        /// </summary>
+        Jit = 1 << 5
     }
 }