IDebuggableProcess: Create and expose interface to enable implementation of debugging tools

# Conflicts:
#	src/ARMeilleure/State/DebugState.cs
#	src/ARMeilleure/State/ExecutionContext.cs
TODO: Fix comments. I also tried implementing AppleHV primitives here (it's actually broken).

src/Ryujinx.Cpu/AppleHv/HvExecutionContext.cs

@@ -127,6 +127,15 @@ namespace Ryujinx.Cpu.AppleHv
             return Interlocked.Exchange(ref _interruptRequested, 0) != 0;
         }
 
+        /// <inheritdoc/>
+        public void DebugStop() => _impl.DebugStop();
+
+        /// <inheritdoc/>
+        public bool DebugStep() => _impl.DebugStep();
+
+        /// <inheritdoc/>
+        public void DebugContinue() => _impl.DebugContinue();
+
         /// <inheritdoc/>
         public void StopRunning()
         {