Update the pugixml headers to be v1.15 compatible (#1247)

* Removed pugixml in favor of paddings to avoid undefined errors and header conflicts for mods

* Changed strategy to update the headers to pugi v1.15 instead

loader/include/Geode/cocos/robtop/xml/pugixml.hpp

@@ -693,7 +693,7 @@ namespace pugi
 		xml_node& operator*() const;
 		xml_node* operator->() const;
 
-		const xml_node_iterator& operator++();
+		xml_node_iterator& operator++();
 		xml_node_iterator operator++(int);
 
 		const xml_node_iterator& operator--();
@@ -735,7 +735,7 @@ namespace pugi
 		xml_attribute& operator*() const;
 		xml_attribute* operator->() const;
 
-		const xml_attribute_iterator& operator++();
+		xml_attribute_iterator& operator++();
 		xml_attribute_iterator operator++(int);
 
 		const xml_attribute_iterator& operator--();
@@ -769,7 +769,7 @@ namespace pugi
 		xml_node& operator*() const;
 		xml_node* operator->() const;
 
-		const xml_named_node_iterator& operator++();
+		xml_named_node_iterator& operator++();
 		xml_named_node_iterator operator++(int);
 
 	private: