Database basic CRUD (#27)

* started schema

* db schemas beginning

* first db schema gen

* added sqlc generation with go generate and sqlite driver

* i think these dependencies are needed

* added IF NOT EXISTS to create and CRUD for each table

* fixed missing columns

* added missing field

* fixed code generation with sqlc

backend/database/sql/sqlcgen/models.go

@@ -0,0 +1,59 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.28.0
+
+package sqlcgen
+
+type Artist struct {
+	ID   int64
+	Name string
+}
+
+type ArtistCredit struct {
+	ID   int64
+	Text interface{}
+}
+
+type ArtistCreditArtist struct {
+	ID       int64
+	ArtistID int64
+	CreditID int64
+}
+
+type AudioFile struct {
+	ID                 int64
+	FilePath           string
+	LengthMilliseconds int64
+	FileTypeID         int64
+	RecordingID        int64
+}
+
+type CoverArt struct {
+	ID         int64
+	IsEmbedded bool
+	FilePath   string
+	FileTypeID int64
+}
+
+type FileType struct {
+	ID        int64
+	Extension string
+}
+
+type Recording struct {
+	ID             int64
+	Name           string
+	ArtistCreditID int64
+}
+
+type ReleaseGroup struct {
+	ID         int64
+	Name       string
+	CoverArtID int64
+}
+
+type ReleaseGroupRecording struct {
+	ID             int64
+	ReleaseGroupID int64
+	RecordingID    int64
+}