ArborX code style

The following code style was adopted in ArborX:

• Code format from .clang-format (with clang-16)

• East const: int const* ptr;

• constexpr West: constexpr float zero = 0.f;

• Camel case template parameters: TemplateType

• Camel case class names: ClassName

• Lower camel case function names: functionName

• Lower case, underscore separated variables: variable_name

• Class members which are private are preceeded by an underscore: _private_class_variable

• Class/struct member type aliases use lower case, underscore separated names: using node_type = Node;

• ArborX::-prefixed Kokkos profiling regions, parallel regions, and views labels

  • ArborX::ClassName::view_label for class member views

  • ArborX::ClassName::function::label for local views, profiling regions and parallel regions in class member functions

  • ArborX::Function::label or ArborX::FunctionalArea::label everywhere else