MdeModulePkg: Add Universal Payload general definition header file

Add Universal Payload general definition header file according to
Universal Payload's documentation as below:
https://universalpayload.github.io/documentation/

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
Tested-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>

MdeModulePkg/Include/UniversalPayload/UniversalPayload.h

@@ -0,0 +1,35 @@
+/** @file
+  Universal Payload general definitions.
+
+Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Revision Reference:
+    - Universal Payload Specification 0.75 (https://universalpayload.github.io/documentation/)
+**/
+
+#ifndef UNIVERSAL_PAYLOAD_H_
+#define UNIVERSAL_PAYLOAD_H_
+
+#pragma pack(1)
+
+typedef struct {
+  UINT8                Revision;
+  UINT8                Reserved;
+  UINT16               Length;
+} UNIVERSAL_PAYLOAD_GENERIC_HEADER;
+
+#pragma pack()
+
+/**
+  Returns the size of a structure of known type, up through and including a specified field.
+
+  @param   TYPE     The name of the data structure that contains the field specified by Field.
+  @param   Field    The name of the field in the data structure.
+
+  @return  size, in bytes.
+
+**/
+#define UNIVERSAL_PAYLOAD_SIZEOF_THROUGH_FIELD(TYPE, Field) (OFFSET_OF(TYPE, Field) + sizeof (((TYPE *) 0)->Field))
+
+#endif // UNIVERSAL_PAYLOAD_H_