Add a flag to enable or disable incoming share

app/src/main/AndroidManifest.xml

@@ -120,10 +120,18 @@
                 <data android:host="user" />
                 <data android:host="room" />
             </intent-filter>
+        </activity>
+
+        <!-- Using an activity-alias for incoming share intent, in order
+        to be able to disable the feature programmatically -->
+        <activity-alias
+            android:name=".ShareActivity"
+            android:exported="true"
+            android:targetActivity=".MainActivity">
             <!-- Incoming share simple -->
             <intent-filter>
                 <action android:name="android.intent.action.SEND" />
-                <data android:mimeType="*/*"/>
+                <data android:mimeType="*/*" />
 
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.OPENABLE" />
@@ -136,7 +144,7 @@
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.OPENABLE" />
             </intent-filter>
-        </activity>
+        </activity-alias>
 
         <provider
             android:name="androidx.startup.InitializationProvider"