react-native: Add support for Pad and TVOS in Platform

types/react-native/index.d.ts

@@ -5614,7 +5614,7 @@ export interface PixelRatioStatic {
  */
 export type PlatformOSType = 'ios' | 'android' | 'windows' | 'web'
 
-interface PlatformStatic {
+interface PlatformStatic extends PlatformIOSStatic {
     OS: PlatformOSType
     Version: number
 
@@ -5624,6 +5624,11 @@ interface PlatformStatic {
     select<T>( specifics: { ios?: T, android?: T} ): T;
 }
 
+interface PlatformIOSStatic {
+    isPad: boolean
+    isTVOS: boolean
+}
+
 /**
  * Deprecated - subclass NativeEventEmitter to create granular event modules instead of
  * adding all event listeners directly to RCTDeviceEventEmitter.