Fixes an API 29 crash with a workaround

app/src/main/AndroidManifest.xml

@@ -8,8 +8,24 @@
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
+<!--
+        android:requestLegacyExternalStorage="true"
+        has been added due to a crash:
+
+        Fatal Exception: java.io.FileNotFoundException
+        /storage/emulated/0/Movies/gif_20_09_18_09_59_41.gif: open failed: EACCES (Permission denied)
+
+        happening here:
+
+        net.pokeranalytics.android.ui.modules.handhistory.replayer.ReplayExportService$startGIFExport$1$c$1.invokeSuspend (ReplayExportService.java:88)
+
+        The temporary fix comes form here:
+        https://medium.com/@sriramaripirala/android-10-open-failed-eacces-permission-denied-da8b630a89df
+  -->
+
     <application
         android:name=".PokerAnalyticsApplication"
+        android:requestLegacyExternalStorage="true"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"