Refactor: variant-aware shader/material pipeline overhaul

Major architectural update to graphics/material/shader system:
- Introduced strongly-typed key structs (Key64/Key128) for passes, variants, and pipelines; removed legacy key types.
- Implemented robust hashing and key generation utilities for efficient variant and pipeline lookup/caching.
- Shader compiler now compiles/caches all keyword variants using new key system; includes handled as lists.
- Switched to push constant root signature for per-draw data; updated HLSL and C# codegen accordingly.
- Refactored Material, Shader, and Pass data structures for cache efficiency and variant support.
- Pipeline library and PSO management now use 128-bit keys and variant-specific caching.
- Replaced WorldNode with SceneNode in editor/scene graph; introduced ComponentManager for archetype/query management.
- Migrated math utilities to Misaki.HighPerformance.Mathematics; updated editor controls.
- Updated all HLSL and codegen for new buffer/push constant layouts and macros.
- Misc: project reference cleanup, D3D12 Work Graph support, doc updates, and code modernization.

Ghost.DSL/ShaderCompiler/Parser/ParseUtility.cs

@@ -0,0 +1,71 @@
+namespace Ghost.DSL.ShaderCompiler.Parser;
+
+internal static class ParseUtility
+{
+    public static List<Token> ParseFunctionArguments(ref TokenStreamSlice stream, TokenType tokenType)
+    {
+        var args = new List<Token>();
+        stream.Expect(TokenType.LParen);
+
+        while (!stream.Peek().type.Equals(TokenType.RParen))
+        {
+            var argToken = stream.Expect(tokenType);
+            args.Add(argToken);
+
+            if (stream.Peek().type == TokenType.Comma)
+            {
+                stream.Consume();
+            }
+            else
+            {
+                break;
+            }
+        }
+
+        stream.Expect(TokenType.RParen);
+        return args;
+    }
+
+    public static FunctionCallDeclaration ParseFunction(ref TokenStreamSlice stream, TokenType tokenType)
+    {
+        var functionToken = stream.Expect(TokenType.Identifier);
+        var args = ParseFunctionArguments(ref stream, tokenType);
+        stream.Expect(TokenType.Semicolon);
+
+        return new FunctionCallDeclaration
+        {
+            name = functionToken,
+            arguments = args
+        };
+    }
+
+    public static bool TrySliceLine(ref TokenStreamSlice stream, out TokenStreamSlice lineStream)
+    {
+        var length = 0;
+        if (!stream.TryPeek(out var nextToken))
+        {
+            lineStream = default;
+            return false;
+        }
+
+        while (!nextToken.Match(TokenType.Semicolon) && !nextToken.Match(TokenType.RBrace))
+        {
+            length++;
+
+            if (!stream.TryPeek(length, out nextToken))
+            {
+                break;
+            }
+        }
+
+        if (length > 0)
+        {
+            lineStream = stream.Slice(length);
+            stream.Consume(); // Consume the semicolon
+            return true;
+        }
+
+        lineStream = default;
+        return false;
+    }
+}