chore: rename file and change variable names to more transparent and …

…clear in readability

pkg/helper/help.go → pkg/helper/contains.go

@@ -2,9 +2,9 @@ package helper
 
 // ContainsInt checks if the given slice of integers contains the specified integer.
 // It returns true if the integer is within the slice, otherwise false.
-func ContainsInt(s []int, e int) bool {
-	for _, a := range s {
-		if a == e {
+func ContainsInt(ints []int, specifiedInt int) bool {
+	for _, i := range ints {
+		if i == specifiedInt {
 			return true
 		}
 	}