feat: add objectManager interface

refact the way to get DBus interface from Qt Meta System

Signed-off-by: ComixHe <heyuming@deepin.org>

api/dbus/org.desktopspec.ApplicationManager1.Instance.xml

@@ -4,9 +4,12 @@
         <property name="Application" type="o" access="read">
             <annotation
                 name="org.freedesktop.DBus.Description"
-                value="Object path of the Application.
+                value="Object path of the Application. 
                        That DBus object will impelement
-                       org.desktopspec.ApplicationManager1.Application."
+                       org.desktopspec.ApplicationManager1.Application.
+                       NOTE:
+                       If the application is uninstalled, this object path
+                       will be set to `/`."
             />
         </property>
 

api/dbus/org.desktopspec.ApplicationManager1.xml

@@ -30,6 +30,5 @@
                        1. You should use pidfd_open(2) to get a pidfd."
             />
         </method>
-
     </interface>
 </node>

api/dbus/org.desktopspec.ObjectManager1.xml

@@ -0,0 +1,19 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "https://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+    <interface name="org.desktopspec.DBus.ObjectManager">
+        <method name="GetManagedObjects">
+            <arg name="objectpath_and_interfaces" type="a{oas}" direction="out" />
+            <annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="ObjectMap"/>
+        </method>
+
+        <signal name="InterfacesAdded">
+            <arg name="object_path" type="o" />
+            <arg name="interfaces" type="as" />
+        </signal>
+
+        <signal name="InterfacesRemoved">
+            <arg name="object_path" type="o" />
+            <arg name="interfaces" type="as" />
+        </signal>
+    </interface>
+</node>