fix metainfo not found by flatpak

Author: ranfdev

data/resources/meson.build

@@ -20,7 +20,7 @@ appdata_file = i18n.merge_file(
     output: '@BASENAME@',
     configuration: appdata_conf
   ),
-  output: 'metainfo.xml',
+  output: '@0@.metainfo.xml'.format(base_id),
   po_dir: podir,
   install: true,
   install_dir: datadir / 'metainfo'

data/resources/resources.gresource.xml

@@ -6,7 +6,7 @@
     <file compressed="true" preprocess="xml-stripblanks">ui/window.ui</file>
     <file compressed="true" preprocess="xml-stripblanks">ui/subscription_info_dialog.ui</file>
     <file compressed="true">style.css</file>
-    <file compressed="true">metainfo.xml</file>
+    <file compressed="true">com.ranfdev.Notify.metainfo.xml</file>
   </gresource>
   <gresource prefix="/com/ranfdev/Notify/icons/16x16/status/">
     <file preprocess="xml-stripblanks" alias="dice3-symbolic.svg">../icons/dice3-symbolic.svg</file>