style: add .clang-format

Signed-off-by: aqxyjay <zhangchunxin@huawei.com>

.clang-format

@@ -0,0 +1,37 @@
+# Copyright (c) 2022 Huawei Device Co., Ltd.
+# 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.
+
+BasedOnStyle: Webkit
+ColumnLimit: 120
+PointerAlignment: Left
+AlignAfterOpenBracket: DontAlign
+ContinuationIndentWidth: 4
+AlignTrailingComments: true
+AlignConsecutiveMacros: Consecutive
+IndentCaseLabels: true
+BreakBeforeBinaryOperators: None
+SpaceBeforeParens: ControlStatementsExceptControlMacros
+SpacesInCStyleCastParentheses: false
+AlignEscapedNewlines: Left
+NamespaceIndentation: None
+FixNamespaceComments: true
+BreakConstructorInitializers: AfterColon
+AlignArrayOfStructures: Left
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortLambdasOnASingleLine: Empty
+AlwaysBreakTemplateDeclarations: Yes
+SpaceInEmptyBlock: false
+LambdaBodyIndentation: Signature
+BreakBeforeTernaryOperators: false
+Cpp11BracedListStyle: true
+SpaceAroundPointerQualifiers: Both