[logging] Migrate CpuDispatcher, SharpEmuRuntime, PhysicalVirtualMemory to SharpEmuLog (#51)

Replaces 34 Console.Error.WriteLine call sites across 3 Core files
with structured SharpEmuLog calls (Debug/Info/Warning/Error/Critical).

CpuDispatcher.cs (10 sites):
- DispatchEntry/DispatchModuleInitializer START and entry-point logs -> Debug
- FATAL EXCEPTION catch blocks -> Critical (with exception object)
- Native backend FAILED -> Error

SharpEmuRuntime.cs (23 sites):
- Loading/Entry/Dispatching/DispatchEntry returned -> Info
- Module load/registered/preload summary -> Info
- Initializer dispatch failed/module start failed -> Error
- Imported data unresolved -> Warning, write-failed -> Error
- Import stub conflict -> Warning
- Trace-level rebind logs -> Debug

PhysicalVirtualMemory.cs (1 site):
- TraceVmem helper -> Log.Debug (SHARPEMU_LOG_VMEM env gate preserved)

Build: 0 errors, 0 warnings

Co-authored-by: Hermes Atlas <hermesatlas@example.com>

src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs

@@ -4,11 +4,14 @@
 using System.Runtime.InteropServices;
 using SharpEmu.Core.Loader;
 using SharpEmu.HLE;
+using SharpEmu.Logging;
 
 namespace SharpEmu.Core.Memory;
 
 public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryAllocator, IDisposable
 {
+    private static readonly SharpEmuLogger Log = SharpEmuLog.For("VMEM");
+
     private readonly ReaderWriterLockSlim _gate = new(LockRecursionPolicy.SupportsRecursion);
     private readonly object _guestAllocationGate = new();
     private readonly object _allocationSearchHintGate = new();
@@ -1052,7 +1055,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
             return;
         }
 
-        Console.Error.WriteLine($"[VMEM] {message}");
+        Log.Debug(message);
     }
 
     public void Dispose()