Added default class method and member grouping and sorting

src/config/config.h

@@ -39,6 +39,8 @@ enum class method_arguments { full, abbreviated, none };
 
 enum class package_type_t { kNamespace, kDirectory };
 
+enum class member_order_t { lexical, as_is };
+
 std::string to_string(method_arguments ma);
 
 enum class comment_parser_t { plain, clang };
@@ -163,6 +165,9 @@ struct inheritable_diagram_options {
     option<plantuml> puml{"plantuml", option_inherit_mode::kAppend};
     option<method_arguments> generate_method_arguments{
         "generate_method_arguments", method_arguments::full};
+    option<bool> group_methods{"group_methods", true};
+    option<member_order_t> member_order{
+        "method_order", member_order_t::lexical};
     option<bool> generate_packages{"generate_packages", false};
     option<package_type_t> package_type{
         "package_type", package_type_t::kNamespace};