Add .clang-format file and format codebase

.clang-format

@@ -0,0 +1,79 @@
+---
+Language: Cpp
+AccessModifierOffset: -4
+AlignAfterOpenBracket: DontAlign
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: LeftWithLastLine
+AlignOperands: DontAlign
+AlignTrailingComments: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: true
+AllowShortEnumsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+BinPackArguments: true
+BinPackParameters: OnePerLine
+BraceWrapping:
+  AfterCaseLabel: false
+  AfterClass: true
+  AfterControlStatement: false
+  AfterEnum: true
+  AfterFunction: true
+  AfterNamespace: false
+  AfterObjCDeclaration: true
+  AfterStruct: true
+  AfterUnion: true
+  BeforeCatch: false
+  BeforeElse: false
+  IndentBraces: false
+BreakBeforeBinaryOperators: NonAssignment
+BreakBeforeBraces: Custom
+BreakBeforeTernaryOperators: false
+BreakConstructorInitializers: BeforeComma
+BreakTemplateDeclarations: Yes
+ColumnLimit: 120
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: false
+DisableFormat: false
+FixNamespaceComments: false
+ForEachMacros: []
+IndentCaseLabels: true
+IndentWidth: 4
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: true
+MacroBlockBegin: ""
+MacroBlockEnd: ""
+MaxEmptyLinesToKeep: 3
+NamespaceIndentation: None
+ObjCBlockIndentWidth: 2
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakAssignment: 500
+PointerAlignment: Left
+ReflowComments: false
+SortIncludes: false
+SpaceAfterCStyleCast: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles: false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+TabWidth: 4
+UseTab: AlignWithSpaces
+WhitespaceSensitiveMacros:
+  - CCC_PACKED_STRUCT
+  - DWARF_IMPORTER_TEST
+  - MDEBUG_IMPORTER_TEST
+  - STABS_TEST
+...

docs/ErrorHandling.md

@@ -8,9 +8,10 @@ where C++ exceptions are disabled.
 It is defined like so:
 
 ```
-class [[nodiscard]] CCC_WARN_UNUSED Result {
+class [[nodiscard]] CCC_WARN_UNUSED Result
+{
 	...
-protected:
+private:
 	Value m_value;
 	std::unique_ptr<Error> m_error;
 	...