Implement Playlist functionality. My god...

Too many changes to summarize.

- Fixes #2.
- Fixes #3.
- Fixes #5.
- Fixes #7.

Start work on uncrustify config.

src/playlist/create-dialog.h

@@ -1,41 +0,0 @@
-/* create-dialog.h
- *
- * Copyright 2021 Joshua Strobl
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * 	http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-#include <glib-2.0/glib-object.h>
-#include <gtk-4.0/gtk/gtk.h>
-
-G_BEGIN_DECLS
-
-/**
- * Type Definition
-**/
-
-#define KOTO_TYPE_CREATE_PLAYLIST_DIALOG koto_create_playlist_dialog_get_type()
-G_DECLARE_FINAL_TYPE(KotoCreatePlaylistDialog, koto_create_playlist_dialog, KOTO, CREATE_PLAYLIST_DIALOG, GObject);
-
-/**
- * Create Dialog Functions
-**/
-
-KotoCreatePlaylistDialog* koto_create_playlist_dialog_new();
-GtkWidget* koto_create_playlist_dialog_get_content(KotoCreatePlaylistDialog *self);
-void koto_create_playlist_dialog_handle_close(KotoCreatePlaylistDialog *self);
-void koto_create_playlist_dialog_handle_create(KotoCreatePlaylistDialog *self);
-void koto_create_playlist_dialog_handle_image_click(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data);
-
-G_END_DECLS