🎨 clean up code

widget.json.ts: just return instead of long if statement + add ?. operators for error handling
widget.png.ts make path universal
widget.ts: remove unnecessary guild db query as getPermission already checks it
Widget.ts make parameters required

src/schema/Widget.ts

@@ -1,7 +1,7 @@
 // https://discord.com/developers/docs/resources/guild#guild-widget-object
 export const WidgetModifySchema = {
-	$enabled: Boolean, // whether the widget is enabled
-	$channel_id: String // the widget channel id
+	enabled: Boolean, // whether the widget is enabled
+	channel_id: String // the widget channel id
 };
 
 export interface WidgetModifySchema {