build: make appdata/desktop files use dynamic app-id

This ensures we get the right app-id based on -Ddevelopment=true.

data/meson.build

@@ -3,17 +3,27 @@ if get_option('gtk') and get_option('libsysprof')
     install_dir: join_paths(datadir, 'mime/packages')
   )
 
+  appdata_in = configure_file(
+            input: 'org.gnome.Sysprof.appdata.xml.in.in',
+           output: 'org.gnome.Sysprof.appdata.xml.in',
+    configuration: config_h,
+  )
   i18n.merge_file(
-            input: 'org.gnome.Sysprof.appdata.xml.in',
-           output: 'org.gnome.Sysprof.appdata.xml',
+            input: appdata_in,
+           output: '@0@.appdata.xml'.format(app_id),
            po_dir: podir,
           install: true,
       install_dir: join_paths(datadir, 'metainfo')
   )
 
+  desktop_in = configure_file(
+            input: 'org.gnome.Sysprof.desktop.in.in',
+           output: 'org.gnome.Sysprof.desktop.in',
+    configuration: config_h,
+  )
   i18n.merge_file(
-            input: 'org.gnome.Sysprof.desktop.in',
-           output: 'org.gnome.Sysprof.desktop',
+            input: desktop_in,
+           output: '@0@.desktop'.format(app_id),
              type: 'desktop',
            po_dir: podir,
           install: true,

data/org.gnome.Sysprof.appdata.xml.in.in

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <component type="desktop-application">
-  <id>org.gnome.Sysprof.desktop</id>
+  <id>@APP_ID@.desktop</id>
   <translation type="gettext">sysprof</translation>
   <name>Sysprof</name>
   <summary>Profile an application or entire system</summary>

data/org.gnome.Sysprof.desktop.in.in

@@ -6,7 +6,7 @@ Comment=Profile an application or entire system.
 Exec=sysprof %u
 TryExec=sysprof
 # Translators: Do NOT translate or transliterate this text (this is an icon file name)!
-Icon=org.gnome.Sysprof
+Icon=@APP_ID@
 StartupNotify=true
 Terminal=false
 Type=Application