po: Add plugin desktop files

Calls preferences will show the name and description of a plugin,
so they should be translatable.

plugins/provider/dummy/meson.build

@@ -26,12 +26,21 @@ dummy_include = include_directories('.')
 dummy_install_dir = join_paths(calls_provider_plugin_libdir, 'dummy')
 
 dummy_plugin = configure_file(
-  input: 'dummy.plugin.in',
-  output: 'dummy.plugin',
+  input: 'dummy.plugin.in.in',
+  output: 'dummy.plugin.in',
   configuration: config_data,
-  install_dir: dummy_install_dir
 )
 
+i18n_plugin = i18n.merge_file(
+  input: dummy_plugin,
+  output: 'dummy.plugin',
+  po_dir: po_dir,
+  type: 'desktop',
+  build_by_default: true,
+  install_dir: dummy_install_dir,
+)
+
+
 dummy_deps = [
   dependency('gobject-2.0'),
   dependency('gtk+-3.0'),

plugins/provider/mm/meson.build

@@ -24,12 +24,21 @@
 mm_install_dir = join_paths(calls_provider_plugin_libdir, 'mm')
 
 mm_plugin = configure_file(
-  input: 'mm.plugin.in',
-  output: 'mm.plugin',
+  input: 'mm.plugin.in.in',
+  output: 'mm.plugin.in',
   configuration: config_data,
-  install_dir: mm_install_dir
 )
 
+i18n_plugin = i18n.merge_file(
+  input: mm_plugin,
+  output: 'mm.plugin',
+  po_dir: po_dir,
+  type: 'desktop',
+  build_by_default: true,
+  install_dir: mm_install_dir,
+)
+
+
 mm_deps = [
   dependency('gobject-2.0'),
   dependency('gtk+-3.0'),

plugins/provider/ofono/meson.build

@@ -26,10 +26,18 @@ subdir('libgdbofono')
 ofono_install_dir = join_paths(calls_provider_plugin_libdir, 'ofono')
 
 ofono_plugin = configure_file(
-  input: 'ofono.plugin.in',
-  output: 'ofono.plugin',
+  input: 'ofono.plugin.in.in',
+  output: 'ofono.plugin.in',
   configuration: config_data,
-  install_dir: ofono_install_dir
+)
+
+i18n_plugin = i18n.merge_file(
+  input: ofono_plugin,
+  output: 'ofono.plugin',
+  po_dir: po_dir,
+  type: 'desktop',
+  build_by_default: true,
+  install_dir: ofono_install_dir,
 )
 
 ofono_deps = [

plugins/provider/sip/meson.build

@@ -26,12 +26,21 @@ sip_include = include_directories('.')
 sip_install_dir = join_paths(calls_provider_plugin_libdir, 'sip')
 
 sip_plugin = configure_file(
-  input: 'sip.plugin.in',
-  output: 'sip.plugin',
+  input: 'sip.plugin.in.in',
+  output: 'sip.plugin.in',
   configuration: config_data,
-  install_dir: sip_install_dir
 )
 
+i18n_plugin = i18n.merge_file(
+  input: sip_plugin,
+  output: 'sip.plugin',
+  po_dir: po_dir,
+  type: 'desktop',
+  build_by_default: true,
+  install_dir: sip_install_dir,
+)
+
+
 sip_deps = [
   dependency('gobject-2.0'),
   dependency('gstreamer-1.0'),