docs(scripting): add baseline api reference and guide

docs/api/XCEngine/Scripting/Mono/MonoScriptRuntime/GetLastError.md

@@ -0,0 +1,22 @@
+# MonoScriptRuntime::GetLastError
+
+**命名空间**: `XCEngine::Scripting`
+
+**类型**: `method`
+
+**头文件**: `XCEngine/Scripting/Mono/MonoScriptRuntime.h`
+
+## 签名
+
+```cpp
+const std::string& GetLastError() const;
+```
+
+## 当前语义
+
+返回最近一次初始化、类发现、实例创建或托管调用失败时记录的错误信息。
+
+## 相关文档
+
+- [Initialize](Initialize.md)
+- [CreateScriptInstance](CreateScriptInstance.md)