Initial commit: ROW Client source code

Game client codebase including:
- CharacterActionControl: Character and creature management
- GlobalScript: Network, items, skills, quests, utilities
- RYLClient: Main client application with GUI and event handlers
- Engine: 3D rendering engine (RYLGL)
- MemoryManager: Custom memory allocation
- Library: Third-party dependencies (DirectX, boost, etc.)
- Tools: Development utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Library/dxx8/include/DShowIDL/dmodshow.idl

@@ -0,0 +1,34 @@
+//------------------------------------------------------------------------------
+// File: DMODShow.idl
+//
+// Desc: This file will be processed by the MIDL tool to 
+//       produce dmodshow.h and proxy-stub code.
+//
+// Copyright (c) 1999-2001, Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+import "unknwn.idl";
+import "objidl.idl";
+import "mediaobj.idl";
+
+// 94297043-bd82-4dfd-b0de-8177739c6d20
+cpp_quote("DEFINE_GUID(CLSID_DMOWrapperFilter, 0x94297043,0xbd82,0x4dfd,0xb0,0xde,0x81,0x77,0x73,0x9c,0x6d,0x20);")
+
+// bcd5796c-bd52-4d30-ab76-70f975b89199
+cpp_quote("DEFINE_GUID(CLSID_DMOFilterCategory,0xbcd5796c,0xbd52,0x4d30,0xab,0x76,0x70,0xf9,0x75,0xb8,0x91,0x99);")
+
+
+[
+    object,
+    uuid(52d6f586-9f0f-4824-8fc8-e32ca04930c2),
+]
+interface IDMOWrapperFilter : IUnknown
+{
+    //  Init is passed in the clsid (so it can call CoCreateInstance)
+    //  and the catgory under which the DMO lives.
+    //  Note that catDMO can be CLSID_NULL, in which case no special
+    //  category-specific processing will be invoked in the wrapper filter.
+    HRESULT Init(REFCLSID clsidDMO, REFCLSID catDMO);
+}
+