Add clang format and tidy configs

.clang-format

@@ -0,0 +1,31 @@
+# https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+Language: Cpp
+BasedOnStyle: LLVM
+AccessModifierOffset: -4
+BreakBeforeBraces: Allman
+BreakBeforeTernaryOperators: true
+ColumnLimit: 100
+EmptyLineBeforeAccessModifier: Never
+FixNamespaceComments: false
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex: "^<[a-z]*>"
+    Priority: 1
+  - Regex: "^<.*/.*>"
+    Priority: 2
+  - Regex: '^<.*\.hpp>'
+    Priority: 3
+  - Regex: '^<.*\.h>'
+    Priority: 4
+  - Regex: ".*"
+    Priority: 5
+IndentCaseLabels: true
+IndentPPDirectives: BeforeHash
+IndentWidth: 4
+InsertNewlineAtEOF: true
+NamespaceIndentation: All
+PointerAlignment: Left
+ReferenceAlignment: Left
+SortIncludes: CaseInsensitive
+SpaceBeforeCaseColon: true
+SpaceBeforeParens: ControlStatements