add clangformat

.clangformat

@@ -0,0 +1,114 @@
+AccessModifierOffset: -2
+AlignAfterOpenBracket: Align
+AlignConsecutiveBitFields: AcrossEmptyLinesAndComments
+AlignEscapedNewlines: Right
+AlignOperands: AlignAfterOperator
+AlignTrailingComments: true
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortLambdasOnASingleLine: Inline
+AllowShortEnumsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Inline
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: Yes
+BasedOnStyle: Microsoft
+BinPackArguments: false
+BinPackParameters: false
+BitFieldColonSpacing: Both
+BraceWrapping: 
+  AfterCaseLabel: true
+  AfterClass: true
+  AfterControlStatement: true
+  AfterEnum: true
+  AfterFunction: true
+  AfterNamespace: true
+  AfterObjCDeclaration: false
+  AfterStruct: true
+  AfterUnion: true
+  AfterExternBlock: true
+  BeforeCatch: false
+  BeforeElse: true
+  IndentBraces: false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+  BeforeLambdaBody: true
+  BeforeWhile: false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Custom
+BreakBeforeConceptDeclarations: true
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: AfterColon
+BreakStringLiterals: true
+CompactNamespaces: false
+Cpp11BracedListStyle: false
+DerivePointerAlignment: true
+EmptyLineBeforeAccessModifier: Always
+FixNamespaceComments: true
+IncludeBlocks: Regroup
+IncludeCategories: 
+  - Regex: '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority: 2
+    SortPriority: 2
+    CaseSensitive: true
+  - Regex: '^((<|")(gtest|gmock|isl|json)/)'
+    Priority: 3
+  - Regex: '<[[:alnum:].]+>'
+    Priority: 4
+  - Regex: '.*'
+    Priority: 1
+    SortPriority: 0
+# IndentAccessModifiers: false
+IndentCaseBlocks: false
+IndentCaseLabels: false
+IndentExternBlock: AfterExternBlock
+IndentGotoLabels: false
+IndentPPDirectives: None
+IndentRequires: true
+IndentWidth: 4
+IndentWrappedFunctionNames: true
+InsertTrailingCommas: Wrapped
+KeepEmptyLinesAtTheStartOfBlocks: false
+Language: Cpp
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: All
+PenaltyBreakAssignment: 0
+PenaltyBreakBeforeFirstCallParameter: 0
+PenaltyBreakComment: 0
+PenaltyBreakFirstLessLess: 2
+PenaltyBreakString: 0
+PenaltyBreakTemplateDeclaration: 1
+PenaltyExcessCharacter: 1
+PenaltyIndentedWhitespace: 4
+PenaltyReturnTypeOnItsOwnLine: 0
+PointerAlignment: Right
+ReflowComments: true
+SortIncludes: true
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: false
+SpaceAroundPointerQualifiers: After
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCaseColon: false
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceBeforeSquareBrackets: false
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 4
+SpacesInAngles: true
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInConditionalStatement: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+TabWidth: 4
+UseCRLF: false
+UseTab: Always
+InsertNewlineAtEOF: true