bin: Rewrite Clapper player binary

A rewritten Clapper video player made using "Clapper" and "ClapperGtk" libraries.

Since both libraries from this repo are in C, newly rewritten Clapper binary is also in C to
avoid mixing different programming languages in a single repo, thus making maintenance easier.
Not depending on GJS gives us also an additional benefit of supporting different operating
systems or linux shells without pulling GJS as dependency.

Licensed under GPL-3.0-or-later.

src/bin/clapper-app/clapper-app-file-dialog.h

@@ -0,0 +1,32 @@
+/* Clapper Application
+ * Copyright (C) 2024 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <clapper/clapper.h>
+
+G_BEGIN_DECLS
+
+G_GNUC_INTERNAL
+void clapper_app_file_dialog_open_files (GtkApplication *gtk_app);
+
+G_GNUC_INTERNAL
+void clapper_app_file_dialog_open_subtitles (GtkApplication *gtk_app, ClapperMediaItem *item);
+
+G_END_DECLS