Meson: add gettext i18n

meson.build

@@ -144,4 +144,5 @@ acconf = configure_file(output : 'acconf.h', configuration : conf)
 subdir('automation')
 subdir('libaegisub')
 subdir('packages')
+subdir('po')
 subdir('src')

po/POTFILES

@@ -0,0 +1,81 @@
+src/ass_style.cpp
+src/audio_box.cpp
+src/audio_karaoke.cpp
+src/audio_renderer_waveform.cpp
+src/audio_timing_dialogue.cpp
+src/audio_timing_karaoke.cpp
+src/auto4_base.cpp
+src/auto4_lua.cpp
+src/charset_detect.cpp
+src/command/app.cpp
+src/command/audio.cpp
+src/command/automation.cpp
+src/command/command.cpp
+src/command/command.h
+src/command/edit.cpp
+src/command/grid.cpp
+src/command/keyframe.cpp
+src/command/recent.cpp
+src/command/subtitle.cpp
+src/command/timecode.cpp
+src/command/time.cpp
+src/command/tool.cpp
+src/command/video.cpp
+src/dialog_about.cpp
+src/dialog_attachments.cpp
+src/dialog_automation.cpp
+src/dialog_autosave.cpp
+src/dialog_colorpicker.cpp
+src/dialog_dummy_video.cpp
+src/dialog_export.cpp
+src/dialog_export_ebu3264.cpp
+src/dialog_fonts_collector.cpp
+src/dialog_jumpto.cpp
+src/dialog_kara_timing_copy.cpp
+src/dialog_log.cpp
+src/dialog_paste_over.cpp
+src/dialog_progress.cpp
+src/dialog_properties.cpp
+src/dialog_resample.cpp
+src/dialog_search_replace.cpp
+src/dialog_selected_choices.cpp
+src/dialog_selection.cpp
+src/dialog_shift_times.cpp
+src/dialog_spellchecker.cpp
+src/dialog_style_editor.cpp
+src/dialog_style_manager.cpp
+src/dialog_styling_assistant.cpp
+src/dialog_text_import.cpp
+src/dialog_timing_processor.cpp
+src/dialog_translation.cpp
+src/dialog_version_check.cpp
+src/dialog_video_details.cpp
+src/dialog_video_properties.cpp
+src/export_fixstyle.cpp
+src/export_framerate.cpp
+src/ffmpegsource_common.cpp
+src/font_file_lister.cpp
+src/font_file_lister_fontconfig.cpp
+src/font_file_lister_gdi.cpp
+src/grid_column.cpp
+src/hotkey.cpp
+src/main.cpp
+src/menu.cpp
+src/mkv_wrap.cpp
+src/preferences_base.cpp
+src/preferences.cpp
+src/project.cpp
+src/resolution_resampler.cpp
+src/search_replace_engine.cpp
+src/subs_controller.cpp
+src/subs_edit_box.cpp
+src/subs_edit_ctrl.cpp
+src/subtitle_format.cpp
+src/subtitle_format_ebu3264.cpp
+src/subtitles_provider_libass.cpp
+src/timeedit_ctrl.cpp
+src/video_box.cpp
+src/visual_tool.cpp
+src/visual_tool_cross.cpp
+src/visual_tool_drag.cpp
+src/visual_tool_vector_clip.cpp

po/meson.build

@@ -0,0 +1,34 @@
+i18n = import('i18n')
+langs = [
+    'ar',
+    'bg',
+    'ca',
+    'cs',
+    'da',
+    'de',
+    'el',
+    'es',
+    'eu',
+    'fa',
+    'fi',
+    'fr_FR',
+    'gl',
+    'hu',
+    'id',
+    'it',
+    'ja',
+    'ko',
+    'nl',
+    'pl',
+    'pt_BR',
+    'pt_PT',
+    'ru',
+    'sr_RS@latin',
+    'sr_RS',
+    'uk_UA',
+    'vi',
+    'zh_CN',
+    'zh_TW',
+]
+
+i18n.gettext('aegisub', languages : langs)