updated project linter-rules and enforced them

lib/model/breakers/BreakerProps.dart

@@ -26,7 +26,7 @@ class BreakerProps extends DataHolder {
     for(var key in breakers.regional.keys) {
       GetBreakersReponseObject value = breakers.regional[key]!;
 
-      if(int.parse(key.split("b")[1]) >= selfVersion) {
+      if(int.parse(key.split('b')[1]) >= selfVersion) {
         if(value.areas.contains(type)) return value.message;
       }
     }