Add clang-format configuration

.clang-format

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+---
+Language: Cpp
+IndentWidth: 4
+AccessModifierOffset: -4
+AlignAfterOpenBracket: DontAlign
+AlignArrayOfStructures: Left
+AlignConsecutiveAssignments:
+  Enabled: true
+  AcrossEmptyLines: false
+  AcrossComments: true
+AllowShortBlocksOnASingleLine: Never
+AllowShortEnumsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: None
+BraceWrapping:
+  BeforeWhile: true
+BreakBeforeBraces: Allman
+ColumnLimit: 120
+IncludeBlocks: Preserve
+IndentCaseBlocks: true
+IndentCaseLabels: true
+InsertBraces: true
+PackConstructorInitializers: Never
+PointerAlignment: Left
+ReferenceAlignment: Left
+SeparateDefinitionBlocks: Always
+SortIncludes: CaseSensitive
+SpaceBeforeParens: Custom
+SpaceBeforeParensOptions:
+  AfterControlStatements: false
+  AfterFunctionDefinitionName: false
+SpaceBeforeRangeBasedForLoopColon: true
+SpacesInAngles: Never
+SpacesInParentheses: false

format.sh

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+#!/bin/bash
+
+REPO_DIR=$(realpath $(dirname $0))
+
+find "$REPO_DIR/src" -iname "*.[ch]pp" -exec clang-format-15 --style=file:"$REPO_DIR/.clang-format" -i {} \;