Use the build system “meson” (close #32)

Replace the build system “setuptools” with “meson”.

po/POTFILES

@@ -0,0 +1,29 @@
+data/xyz.suruatoel.mcg.gschema.xml
+data/ui/album-headerbar.ui
+data/ui/connection-panel.ui
+data/ui/cover-panel.ui
+data/ui/cover-toolbar.ui
+data/ui/gtk.menu.ui
+data/ui/info-dialog.ui
+data/ui/library-panel.ui
+data/ui/library-toolbar.ui
+data/ui/playlist-panel.ui
+data/ui/playlist-toolbar.ui
+data/ui/server-panel.ui
+data/ui/server-toolbar.ui
+data/ui/shortcuts-dialog.ui
+data/ui/window.ui
+src/albumheaderbar.py
+src/application.py
+src/client.py
+src/connectionpanel.py
+src/coverpanel.py
+src/infodialog.py
+src/librarypanel.py
+src/main.py
+src/playlistpanel.py
+src/serverpanel.py
+src/shortcutsdialog.py
+src/utils.py
+src/window.py
+src/zeroconf.py