Added new operators types '>=' and '<='

Add new operators ">=" and "<=" in query filter syntax.
Hello,

They are identation format changes.


```java
        switch (operator) {
        case DIFFERENT_FROM:
            sb.append(" <> ");
            break;
```
VS
```java
        switch (operator) {
            case DIFFERENT_FROM:
                sb.append(" <> ");
                break;
```

Regards,