Adding ESPRESSO automation name

Author: shridharkalagi

src/main/java/io/appium/java_client/remote/AutomationName.java

@@ -23,4 +23,5 @@ public interface AutomationName {
     String IOS_XCUI_TEST = "XCuiTest";
     String ANDROID_UIAUTOMATOR2 = "UIAutomator2";
     String YOUI_ENGINE = "youiengine";
+    String ESPRESSO = "Espresso";
 }