meson: Add phone-ringer plugin

plugins/meson.build

@@ -9,4 +9,6 @@ subdir('rtp')
 if host_machine.system() == 'windows'
     subdir('win32-fonts')
     subdir('windows-notification')
+else
+    subdir('phone-ringer')
 endif

plugins/phone-ringer/meson.build

@@ -0,0 +1,19 @@
+dependencies = [
+    dep_dino,
+    dep_libcanberra,
+    dep_gee,
+    dep_glib,
+    dep_gmodule,
+    dep_gdk_pixbuf,
+    dep_qlite,
+    dep_xmpp_vala,
+    dep_gtk4,
+]
+
+sources = files(
+    'src/plugin.vala',
+    'src/register_plugin.vala',
+)
+
+lib_phone_ringer = shared_library('phone-ringer', sources, name_prefix: '', dependencies: dependencies, kwargs: install_options)
+dep_phone_ringer = declare_dependency(link_with: lib_phone_ringer, include_directories: include_directories('.'))