core: class: add functions to get a registered class, and get the name of a class

core/class.c

@@ -6,6 +6,21 @@
 #include <stdlib.h>
 #include <string.h>
 
+void *b_class_get(b_type id)
+{
+	struct b_type_registration *r = b_type_get_registration(id);
+	if (!r) {
+		return NULL;
+	}
+
+	return r->r_class;
+}
+
+const char *b_class_get_name(const struct _b_class *c)
+{
+	return c->c_type->r_info->t_name;
+}
+
 void *b_class_get_interface(const struct _b_class *c, const union b_type *id)
 {
 	const struct b_type_registration *type_reg = c->c_type;