feat: Add test cases for JsonFormatter class

This class is in com.jayway.jsonpath.internal package.Add cases to cover the following:
-Simple Json Object, Json Object Array
-Json With Escaped Characters,Json Object with Escaped Characters

json-path/src/test/java/com/jayway/jsonpath/internal/JsonFormatterTest.java

@@ -22,7 +22,7 @@ public class JsonFormatterTest {
     //  Test case for pretty printing a JSON object with escaped characters
     // The input is a JSON object with escaped characters
     // The expected output is the same JSON object with proper indentation
-
+  //
     @Test
     public void testPrettyPrint_JsonWithEscapedCharacters() {
         JsonFormatter jsonFormatter = new JsonFormatter();