fix(RHI): 添加 OpenGL 源文件到 CMakeLists 并修复编译错误

- 添加 OpenGL RHI 所有源文件到 engine/CMakeLists.txt
- 修复 OpenGLPipelineState 结构体重定义问题
- 修复 BufferDesc/TextureDesc/ShaderCompileDesc API 不匹配
- 添加 OpenGLShader 缺少的基类纯虚函数实现
- 修复 HashMap 迭代器支持和 ResourceManager API 调用

engine/include/XCEngine/Containers/HashMap.h

@@ -42,6 +42,24 @@ public:
     size_t Size() const { return m_size; }
     bool Empty() const { return m_size == 0; }
 
+    using Iterator = typename Array<Pair>::Iterator;
+    using ConstIterator = typename Array<Pair>::ConstIterator;
+
+    Iterator begin() { return m_buckets[0].pairs.begin(); }
+    Iterator end() { 
+        if (m_bucketCount > 0) {
+            return m_buckets[m_bucketCount - 1].pairs.end();
+        }
+        return Iterator(nullptr); 
+    }
+    ConstIterator begin() const { return m_buckets[0].pairs.begin(); }
+    ConstIterator end() const { 
+        if (m_bucketCount > 0) {
+            return m_buckets[m_bucketCount - 1].pairs.end();
+        }
+        return ConstIterator(nullptr); 
+    }
+
     void SetAllocator(Memory::IAllocator* allocator) { m_allocator = allocator; }
 
 private: