Add .clang-format

Add config file for clang-format. The configuration is based on
rt-labs coding conventions.

.clang-format

@@ -0,0 +1,41 @@
+AlignAfterOpenBracket: AlwaysBreak
+AlignConsecutiveAssignments: false
+AlignConsecutiveMacros: true
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: None
+AllowShortIfStatementsOnASingleLine: Never
+BinPackArguments: false
+BinPackParameters: false
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterCaseLabel: true
+  AfterClass: true
+  AfterControlStatement: true
+  AfterEnum: true
+  AfterFunction: true
+  AfterNamespace: true
+  AfterStruct: true
+  AfterUnion: true
+  BeforeCatch: true
+  BeforeElse: true
+  IndentBraces: false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: false
+  AfterExternBlock: false
+ColumnLimit: 80
+ContinuationIndentWidth: 3
+IndentCaseLabels: false
+IndentWidth: 3
+PenaltyBreakAssignment: 10
+PenaltyBreakBeforeFirstCallParameter: 30
+PenaltyBreakComment: 10
+PenaltyBreakString: 100
+PenaltyExcessCharacter: 100
+PenaltyReturnTypeOnItsOwnLine: 100000
+PointerAlignment: Middle
+SortIncludes: false
+SpaceBeforeParens: NonEmptyParentheses
+UseTab: Never