TF-32 Add presentation layer of download attachment for android platform

android/app/src/main/AndroidManifest.xml

@@ -3,6 +3,7 @@
     package="com.linagora.android.tmail">
 
     <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28"/>
 
     <!-- webviewflutter support minSdk version to at least 19 -->
     <!-- flutter_inappwebview support minSdk version to at least 17 -->
@@ -17,7 +18,7 @@
     </queries>
 
    <application
-        android:label="TMail"
+        android:label="@string/app_name"
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
@@ -48,6 +49,17 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+
+       <provider
+           android:name="vn.hunghd.flutterdownloader.DownloadedFileProvider"
+           android:authorities="${applicationId}.flutter_downloader.provider"
+           android:exported="false"
+           android:grantUriPermissions="true">
+           <meta-data
+               android:name="android.support.FILE_PROVIDER_PATHS"
+               android:resource="@xml/provider_paths"/>
+       </provider>
+
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
         <meta-data

android/app/src/main/res/values/strings.xml

@@ -0,0 +1,9 @@
+<resources>
+    <string name="app_name">Team Mail</string>
+    <string name="flutter_downloader_notification_started">Started</string>
+    <string name="flutter_downloader_notification_in_progress">In Progress</string>
+    <string name="flutter_downloader_notification_canceled">Canceled</string>
+    <string name="flutter_downloader_notification_failed">Failed</string>
+    <string name="flutter_downloader_notification_complete">Completed</string>
+    <string name="flutter_downloader_notification_paused">Paused</string>
+</resources>