[BUGFIX] sonarqube: Prefer class field declaration over this assignment in constructor for static values.

Class properties should be declared as fields rather than assigned in constructors typescript:S7757

Author: Gonzalo Diaz

src/hackerrank/interview_preparation_kit/sort/ctci_bubble_sort.ts

@@ -7,10 +7,9 @@ const SEPARATOR = '\n';
 class SortableGroup {
   group: number[];
 
-  count: number;
+  count = 0;
 
   constructor(group: number[]) {
-    this.count = 0;
     this.group = group;
   }