Update .clang-format and source/header files

Author: ramsafin

.clang-format

@@ -1,10 +1,12 @@
 BasedOnStyle: Google
 IndentWidth: 2
 ColumnLimit: 120
+AccessModifierOffset: -2
 AllowShortFunctionsOnASingleLine: Inline
 SortIncludes: true
-IncludeBlocks: Merge
-DerivePointerAlignment: false
+IncludeBlocks: Preserve
 PointerAlignment: Left
+DerivePointerAlignment: false
 SpaceBeforeParens: ControlStatements
 BreakBeforeBraces: Allman  # Or 'Attach' if you prefer brace on same line
+SpacesBeforeTrailingComments: 2

src/main.cpp

@@ -1,4 +1,5 @@
 #include <iostream>
+
 #include "math/arithmetic.hpp"
 
 int main()

tests/test_arithmetic.cpp

@@ -1,4 +1,5 @@
 #include <gtest/gtest.h>
+
 #include "math/arithmetic.hpp"
 
 TEST(Arithmetic, Add)