Implement initial audiobook UX (some of which is a bit of a WIP).

- Renamed various components and moved them to src/components.
- Renamed KOTO_PREFERRED_MODEL* to KOTO_PREFERRED_PLAYLIST*
- Renamed koto string utility functions to always be prefixed with koto_utils_string_ for consistency.
- Added configuration options for show / hiding various album information, as well as preferred sort type.
- Changed db schema to reflect various metadata changes (sorry).
- Implemented genre, narrator, year aggregation from KotoTrack to KotoAlbum for use in KotoAlbumInfo and audiobooks.
- Rearchitected our playlist functionality for KotoAlbums to always have an inner KotoPlaylist that is used.
- Added various getters / setters for new koto_album functionality.
- Implement aggregation of KotoAlbum pointer aggregation in the KotoArtist as a GQueue and GListStore instead of GList so we can get all the albums associated with an artist and use the GListStore for the audiobook view.
- Implement some initial album sorting in Artists (more work to do on this front).
- Many improvements to file indexing logic for CD and position detection, various new koto_track_helpers.
- Add new logic for knowing when to hide playlists given we generate them for each Album now.
- Fix missing updates of KotoPlaylist in KotoNav.
- Added playback position to KotoPlayerbar, renamed bar refs to self.
- New Playlist state saving.
- Updated track ticking logic for track in KotoPlaybackEngine.
- Fixed playback position detection in our KotoPlaybackEngine by swapping from GST_FORMAT_DEFAULT to GST_FORMAT_TIME.
- Changed our get_progress to divide by GST_SECOND.
- Fixed missing type checks in various KotoPlaybackEngine functions.

Fixes #13. Fixes #14. Fixes #15.

src/pages/audiobooks/genres-banner.h

@@ -0,0 +1,44 @@
+/* genres-banner.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
+
+#define KOTO_TYPE_AUDIOBOOKS_GENRE_BANNER koto_audiobooks_genres_banner_get_type()
+#define KOTO_AUDIOBOOKS_GENRES_BANNER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), KOTO_TYPE_AUDIOBOOKS_GENRE_BANNER, KotoAudiobooksGenresBanner))
+typedef struct _KotoAudiobooksGenresBanner KotoAudiobooksGenresBanner;
+typedef struct _KotoAudiobooksGenresBannerClass KotoAudiobooksGenresBannerClass;
+
+GLIB_AVAILABLE_IN_ALL
+GType koto_audiobooks_genres_banner_get_type(void) G_GNUC_CONST;
+
+#define KOTO_IS_AUDIOBOOKS_GENRES_BANNER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), KOTO_TYPE_AUDIOBOOKS_GENRE_BANNER))
+
+void koto_audiobooks_genres_banner_add_genre(
+	KotoAudiobooksGenresBanner * self,
+	gchar * genre_id
+);
+
+GtkWidget * koto_audiobooks_genres_banner_get_main(KotoAudiobooksGenresBanner * self);
+
+KotoAudiobooksGenresBanner * koto_audiobooks_genres_banner_new();
+
+G_END_DECLS