Initial commit: Complete open-source Decal rebuild

All 5 phases of the open-source Decal rebuild:

Phase 1: 14 decompiled .NET projects (Interop.*, Adapter, FileService, DecalUtil)
Phase 2: 10 native DLLs rewritten as C# COM servers with matching GUIDs
  - DecalDat, DHS, SpellFilter, DecalInput, DecalNet, DecalFilters
  - Decal.Core, DecalControls, DecalRender, D3DService
Phase 3: C++ shims for Inject.DLL (D3D9 hooking) and LauncherHook.DLL
Phase 4: DenAgent WinForms tray application
Phase 5: WiX installer and build script

25 C# projects building with 0 errors.
Native C++ projects require VS 2022 + Windows SDK (x86).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Native/DecalFilters/AllegianceInfo.cpp

@@ -0,0 +1,83 @@
+
+#include "stdafx.h"
+#include "DecalFilters.h"
+#include "AllegianceInfo.h"
+
+/////////////////////////////////////////////////////////////////////////////
+
+STDMETHODIMP cAllegianceInfo::get_Name(BSTR *pVal)
+{
+	*pVal = T2BSTR( m_pAllegiance->Name );
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_GUID(long *pVal)
+{
+	*pVal = m_pAllegiance->GUID;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_TreeParent(long *pVal)
+{
+	*pVal = m_pAllegiance->TreeParent;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_Type(long *pVal)
+{
+	*pVal = m_pAllegiance->Type;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_XP(long *pVal)
+{
+	*pVal = m_pAllegiance->XP;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_Loyalty(long *pVal)
+{
+	*pVal = m_pAllegiance->Loyalty;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_Leadership(long *pVal)
+{
+	*pVal = m_pAllegiance->Leadership;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_Gender(long *pVal)
+{
+	*pVal = m_pAllegiance->Gender;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_Race(long *pVal)
+{
+	*pVal = m_pAllegiance->Race;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_Rank(long *pVal)
+{
+	*pVal = m_pAllegiance->Rank;
+
+	return S_OK;
+}
+
+STDMETHODIMP cAllegianceInfo::get_Unknown(double *pVal)
+{
+	*pVal = m_pAllegiance->Unknown;
+
+	return S_OK;
+}