Add --extra-manifest-application-xml for injecting elements inside <application>

pythonforandroid/bootstraps/_sdl_common/build/templates/AndroidManifest.tmpl.xml

@@ -142,6 +142,7 @@
     {% for a in args.add_activity  %}
     <activity android:name="{{ a }}"></activity>
     {% endfor %}
+    {{ args.extra_manifest_application_xml }}
     </application>
 
 </manifest>

pythonforandroid/bootstraps/common/build/build.py

@@ -1050,6 +1050,15 @@ def create_argument_parser():
     ap.add_argument('--extra-manifest-application-arguments', default='',
                     help='Extra arguments to be added to the <manifest><application> tag of'
                          'AndroidManifest.xml')
+    ap.add_argument('--extra-manifest-application-xml', default='',
+                    help=('Extra xml to write directly inside the <manifest><application> '
+                          'element of AndroidManifest.xml, i.e. as a sibling of <activity>/'
+                          '<service>/etc, as opposed to --extra-manifest-application-arguments '
+                          'which only supports attributes on the <application> tag itself. '
+                          'Needed for e.g. a <provider> entry (such as a FileProvider), which '
+                          'neither --extra-manifest-xml (a sibling of <application>, at the '
+                          '<manifest> root) nor --extra-manifest-application-arguments '
+                          '(attributes only) can express.'))
     ap.add_argument('--manifest-placeholders', dest='manifest_placeholders',
                     default='[:]', help=('Inject build variables into the manifest '
                                          'via the manifestPlaceholders property'))

pythonforandroid/bootstraps/qt/build/templates/AndroidManifest.tmpl.xml

@@ -106,6 +106,7 @@
     {% for a in args.add_activity  %}
     <activity android:name="{{ a }}"></activity>
     {% endfor %}
+    {{ args.extra_manifest_application_xml }}
     </application>
 
 </manifest>

pythonforandroid/bootstraps/service_library/build/templates/AndroidManifest.tmpl.xml

@@ -15,6 +15,7 @@
                  android:process=":service_{{ name }}"
                  android:exported="true" />
         {% endfor %}
+    {{ args.extra_manifest_application_xml }}
     </application>
 
 </manifest>

pythonforandroid/bootstraps/service_only/build/templates/AndroidManifest.tmpl.xml

@@ -94,6 +94,7 @@
             </intent-filter>
         </receiver>
         {% endif %}
+    {{ args.extra_manifest_application_xml }}
     </application>
 
 </manifest>

pythonforandroid/bootstraps/webview/build/templates/AndroidManifest.tmpl.xml

@@ -102,6 +102,7 @@
             </intent-filter>
         </receiver>
         {% endif %}
+    {{ args.extra_manifest_application_xml }}
     </application>
 
 </manifest>