Add interface to manage accounts

Author: ranfdev

Cargo.lock

@@ -5,6 +5,7 @@ blueprints = custom_target('blueprints',
     'ui/window.blp',
     'ui/shortcuts.blp',
     'ui/subscription_info_dialog.blp',
+    'ui/preferences.blp',
   ),
   output: '.',
   command: [find_program('blueprint-compiler'), 'batch-compile', '@OUTPUT@', '@CURRENT_SOURCE_DIR@', '@INPUT@'],

data/resources/meson.build

@@ -5,6 +5,7 @@
     <file compressed="true" preprocess="xml-stripblanks" alias="gtk/help-overlay.ui">ui/shortcuts.ui</file>
     <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" preprocess="xml-stripblanks">ui/preferences.ui</file>
     <file compressed="true">style.css</file>
     <file compressed="true">com.ranfdev.Notify.metainfo.xml</file>
   </gresource>