Reverting the dev.flutter -> com.example change (#222)

animations/android/app/src/debug/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.animations">
+    package="dev.flutter.animations">
     <!-- Flutter needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->

animations/android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.animations">
+    package="dev.flutter.animations">
     <!-- io.flutter.app.FlutterApplication is an android.app.Application that
          calls FlutterMain.startInitialization(this); in its onCreate method.
          In most cases you can leave this as-is, but you if you want to provide

animations/android/app/src/main/kotlin/dev/flutter/animations/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.example.animations
+package dev.flutter.animations
 
 import androidx.annotation.NonNull;
 import io.flutter.embedding.android.FlutterActivity

animations/android/app/src/profile/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.animations">
+    package="dev.flutter.animations">
     <!-- Flutter needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->