- refactor(templates): update sidebar display conditionals for consistency

- Modified multiple template files to change the sidebar length conditionals from `!== 0` to `> 0` for improved readability and consistency across components.

- Added Code of Conduct

apps/artboard/src/templates/azurill.tsx

@@ -562,7 +562,9 @@ export const Azurill = ({ columns, isFirstPage = false }: TemplateProps) => {
           ))}
         </div>
 
-        <div className={cn("main group space-y-4", sidebar.length !== 0 ? "col-span-2" : "col-span-3")}>
+        <div
+          className={cn("main group space-y-4", sidebar.length > 0 ? "col-span-2" : "col-span-3")}
+        >
           {main.map((section) => (
             <Fragment key={section}>{mapSectionToComponent(section)}</Fragment>
           ))}