chore(style): add .clang-format

.clang-format

@@ -0,0 +1,55 @@
+---
+AccessModifierOffset: 0
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortIfStatementsOnASingleLine: Never
+AlwaysBreakTemplateDeclarations: Yes
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeComma
+ColumnLimit: 0
+CompactNamespaces: false
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: false
+DeriveLineEnding: false
+DerivePointerAlignment: false
+IncludeBlocks: Merge
+IncludeCategories:
+  - Regex: '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority: 2
+    SortPriority: 2
+  - Regex: '^(<|"(gtest|gmock|isl|json)/)'
+    Priority: 3
+  - Regex: "<[[:alnum:].]+>"
+    Priority: 4
+  - Regex: ".*"
+    Priority: 1
+    SortPriority: 0
+IndentGotoLabels: false
+IndentWidth: 4
+MaxEmptyLinesToKeep: 1
+ObjCBlockIndentWidth: 4
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: false
+PointerAlignment: Left
+SortIncludes: true
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: true
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeSquareBrackets: false
+SpaceInEmptyBlock: false
+SpacesInAngles: false
+SpacesInCStyleCastParentheses: false
+SpacesInConditionalStatement: false
+Standard: c++11
+TabWidth: 4
+TypenameMacros: ['STORM_EXPLICIT_LIST', 'STORM_LIST']
+UseCRLF: false
+UseTab: Never

.clang-format-ignore

@@ -0,0 +1,2 @@
+/lib
+/vendor