Move Java Blimp shell code to app subpackage

blimp/client/app/android/AndroidManifest.xml.jinja2

Index: blimp/client/app/android/AndroidManifest.xml.jinja2
diff --git a/blimp/client/app/android/AndroidManifest.xml.jinja2 b/blimp/client/app/android/AndroidManifest.xml.jinja2
index 129722a6bf0f4e24b036d5ddf1c26a9a03a6de06..ee0fa220a5690cc193e1141129b4134933a45fef 100644
--- a/blimp/client/app/android/AndroidManifest.xml.jinja2
+++ b/blimp/client/app/android/AndroidManifest.xml.jinja2
@@ -15,10 +15,10 @@
     <uses-permission android:name="android.permission.READ_SYNC_SETTINGS"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS"/>
-    <application android:name="org.chromium.blimp.BlimpApplication"
+    <application android:name="org.chromium.blimp.app.BlimpApplication"
             android:label="Blimp"
             android:icon="@mipmap/app_icon">
-        <activity android:name="org.chromium.blimp.BlimpRendererActivity"
+        <activity android:name="org.chromium.blimp.app.BlimpRendererActivity"
                   android:launchMode="singleTask"
                   android:theme="@style/Theme.AppCompat.Light.NoActionBar"
                   android:configChanges="orientation|keyboardHidden|keyboard|screenSize"
@@ -39,8 +39,8 @@
                 <data android:scheme="https" />
             </intent-filter>
         </activity>
-        <activity android:name="org.chromium.blimp.settings.Preferences"/>
-        <activity android:name="org.chromium.blimp.BrowserRestartActivity"
+        <activity android:name="org.chromium.blimp.app.settings.Preferences"/>
+        <activity android:name="org.chromium.blimp.app.BrowserRestartActivity"
             android:launchMode="singleInstance"
             android:exported="false"
             android:theme="@android:style/Theme.Translucent.NoTitleBar"