Initial work to support AArch32 with a interpreter, plus nvmm stubs (not used for now)

ChocolArm64/AThread.cs

@@ -30,6 +30,8 @@ namespace ChocolArm64
 
             ThreadState = new AThreadState();
 
+            ThreadState.ExecutionMode = AExecutionMode.AArch64;
+
             ThreadState.Running = true;
         }