Implement a new JIT for Arm devices (#6057)

* Implement a new JIT for Arm devices

* Auto-format

* Make a lot of Assembler members read-only

* More read-only

* Fix more warnings

* ObjectDisposedException.ThrowIf

* New JIT cache for platforms that enforce W^X, currently unused

* Remove unused using

* Fix assert

* Pass memory manager type around

* Safe memory manager mode support + other improvements

* Actual safe memory manager mode masking support

* PR feedback

src/ARMeilleure/Native/JitSupportDarwin.cs

@@ -5,7 +5,7 @@ using System.Runtime.Versioning;
 namespace ARMeilleure.Native
 {
     [SupportedOSPlatform("macos")]
-    internal static partial class JitSupportDarwin
+    static partial class JitSupportDarwin
     {
         [LibraryImport("libarmeilleure-jitsupport", EntryPoint = "armeilleure_jit_memcpy")]
         public static partial void Copy(IntPtr dst, IntPtr src, ulong n);