fix(flutter_vibrate): Add missing import for TARGET_OS_SIMULATOR

The `TARGET_OS_SIMULATOR` macro was not in scope in `SwiftVibratePlugin.swift`, causing build failures on the iOS simulator.

This change adds the necessary `#import <TargetConditionals.h>` to the bridging header (`VibratePlugin.h`) to make the macro available to the Swift compiler.

packages/flutter_vibrate/android/build.gradle

@@ -20,14 +20,10 @@ rootProject.allprojects {
 }
 
 apply plugin: 'com.android.library'
-apply plugin: 'dev.flutter.flutter-gradle-plugin'
-apply plugin: 'dev.flutter.flutter-gradle-plugin'
-apply plugin: 'dev.flutter.flutter-gradle-plugin'
-apply plugin: 'dev.flutter.flutter-gradle-plugin'
 
 android {
     namespace "flutter.plugins.vibrate"
-    compileSdkVersion flutter.compileSdkVersion
+    compileSdkVersion 30
 
     defaultConfig {
         minSdkVersion 16

packages/flutter_vibrate/ios/Classes/VibratePlugin.h

@@ -1,4 +1,6 @@
 #import <Flutter/Flutter.h>
+#import <TargetConditionals.h>
+#import <TargetConditionals.h>
 
 @interface VibratePlugin : NSObject<FlutterPlugin>
 @end