recover package and return shard activity

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/recover/ReturnShardActivity.java

@@ -0,0 +1,4 @@
+package org.briarproject.briar.android.socialbackup.recover;
+
+public class ReturnShardActivity {
+}

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/recover/ReturnShardState.java

@@ -0,0 +1,4 @@
+package org.briarproject.briar.android.socialbackup.recover;
+
+public class ReturnShardState {
+}

briar-android/src/main/java/org/briarproject/briar/android/socialbackup/recover/ReturnShardViewModel.java

@@ -0,0 +1,4 @@
+package org.briarproject.briar.android.socialbackup.recover;
+
+public class ReturnShardViewModel {
+}