feat: user permissions

src/lib/components/chat/Messages/ResponseMessage.svelte

@@ -729,7 +729,7 @@
 
 							{#if message.done}
 								{#if !readOnly}
-									{#if $user.role === 'user' ? ($config?.permissions?.chat?.editing ?? true) : true}
+									{#if $user.role === 'user' ? ($user?.permissions?.chat?.edit ?? true) : true}
 										<Tooltip content={$i18n.t('Edit')} placement="bottom">
 											<button
 												class="{isLastMessage