feat: scaffold C++ template with tooling helpers

.clang-format

@@ -0,0 +1,33 @@
+BasedOnStyle: LLVM
+Language: Cpp
+Standard: c++20
+IndentWidth: 4
+TabWidth: 4
+UseTab: Never
+ColumnLimit: 100
+AccessModifierOffset: -4
+NamespaceIndentation: All
+AllowShortFunctionsOnASingleLine: Empty
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterClass: false
+  AfterControlStatement: false
+  AfterEnum: false
+  AfterFunction: false
+  AfterNamespace: false
+  AfterStruct: false
+  AfterUnion: false
+  BeforeCatch: true
+  BeforeElse: true
+  SplitEmptyFunction: false
+  SplitEmptyRecord: false
+  SplitEmptyNamespace: false
+IncludeBlocks: Preserve
+IncludeCategories:
+  - Regex: '^<.*>$'
+    Priority: 1
+  - Regex: '^".*"$'
+    Priority: 2
+
+SpacesInAngles: false
+SpaceBeforeParens: ControlStatements