chore: import upstream snapshot with attribution

paddle/phi/api/all.h

@@ -0,0 +1,40 @@
+/* Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+#pragma once
+
+#ifdef _WIN32
+#ifndef NOMINMAX
+#define NOMINMAX  // msvc max/min macro conflict with std::min/max
+#endif
+#endif
+
+// new phi apis
+#include "paddle/phi/api/include/api.h"
+#include "paddle/phi/api/include/context_pool.h"
+#include "paddle/phi/api/include/fused_api.h"
+#include "paddle/phi/api/include/sparse_api.h"
+#include "paddle/phi/api/include/tensor.h"
+#include "paddle/phi/api/include/tensor_utils.h"
+
+// phi common headers
+#include "paddle/phi/common/backend.h"
+#include "paddle/phi/common/data_type.h"
+#include "paddle/phi/common/int_array.h"
+#include "paddle/phi/common/scalar.h"
+
+// original custom op headers
+#include "paddle/phi/api/ext/dispatch.h"
+#include "paddle/phi/api/ext/op_meta_info.h"
+#include "paddle/phi/api/ext/tensor_compat.h"