feat: add iOS related find by annotations for tvOS (#1456)

Author: KazuCocoa

src/main/java/io/appium/java_client/pagefactory/DefaultElementByBuilder.java

@@ -170,7 +170,7 @@ protected By buildMobileNativeBy() {
                     getBys(AndroidFindBy.class, AndroidFindBys.class, AndroidFindAll.class));
         }
 
-        if (isIOSXcuit() || isIOS()) {
+        if (isIOSXcuit() || isIOS() || isTvOS()) {
             return buildMobileBy(howToUseLocatorsOptional.map(HowToUseLocators::iOSXCUITAutomation).orElse(null),
                     getBys(iOSXCUITFindBy.class, iOSXCUITFindBys.class, iOSXCUITFindAll.class));
         }

src/main/java/io/appium/java_client/pagefactory/bys/builder/AppiumByBuilder.java

@@ -19,6 +19,7 @@
 import static io.appium.java_client.remote.AutomationName.IOS_XCUI_TEST;
 import static io.appium.java_client.remote.MobilePlatform.ANDROID;
 import static io.appium.java_client.remote.MobilePlatform.IOS;
+import static io.appium.java_client.remote.MobilePlatform.TVOS;
 import static io.appium.java_client.remote.MobilePlatform.WINDOWS;
 
 import org.openqa.selenium.By;
@@ -178,6 +179,10 @@ protected boolean isIOS() {
         return IOS.equalsIgnoreCase(platform);
     }
 
+    protected boolean isTvOS() {
+        return TVOS.equalsIgnoreCase(platform);
+    }
+
     protected boolean isIOSXcuit() {
         return isIOS() && IOS_XCUI_TEST.equalsIgnoreCase(automation);
     }