Big Refactor:

- Create model.DataStore, with provision for transactions
- Change all layers dependencies on repositories to use DataStore
- Implemented persistence.SQLStore
- Removed iTunes Bridge/Importer support

model/model.go

@@ -0,0 +1,35 @@
+package model
+
+import (
+	"errors"
+)
+
+var (
+	ErrNotFound = errors.New("data not found")
+)
+
+// Filters use the same operators as Beego ORM: See https://beego.me/docs/mvc/model/query.md#operators
+// Ex: var q = QueryOptions{Filters: Filters{"name__istartswith": "Deluan","age__gt": 25}}
+// All conditions will be ANDed together
+// TODO Implement filter in repositories' methods
+type Filters map[string]interface{}
+
+type QueryOptions struct {
+	SortBy  string
+	Desc    bool
+	Offset  int
+	Size    int
+	Filters Filters
+}
+
+type DataStore interface {
+	Album() AlbumRepository
+	Artist() ArtistRepository
+	MediaFile() MediaFileRepository
+	MediaFolder() MediaFolderRepository
+	Genre() GenreRepository
+	Playlist() PlaylistRepository
+	Property() PropertyRepository
+
+	WithTx(func(tx DataStore) error) error
+}