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/artists.sql.go

@@ -0,0 +1,60 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.28.0
+// source: artists.sql
+
+package sqlcgen
+
+import (
+	"context"
+)
+
+const createArtist = `-- name: CreateArtist :one
+INSERT INTO artists (name) VALUES (?)
+RETURNING id, name
+`
+
+func (q *Queries) CreateArtist(ctx context.Context, name string) (Artist, error) {
+	row := q.db.QueryRowContext(ctx, createArtist, name)
+	var i Artist
+	err := row.Scan(&i.ID, &i.Name)
+	return i, err
+}
+
+const deleteArtist = `-- name: DeleteArtist :exec
+DELETE FROM artists 
+WHERE id =?
+`
+
+func (q *Queries) DeleteArtist(ctx context.Context, id int64) error {
+	_, err := q.db.ExecContext(ctx, deleteArtist, id)
+	return err
+}
+
+const getArtist = `-- name: GetArtist :one
+SELECT id, name FROM artists 
+WHERE id = ? LIMIT 1
+`
+
+func (q *Queries) GetArtist(ctx context.Context, id int64) (Artist, error) {
+	row := q.db.QueryRowContext(ctx, getArtist, id)
+	var i Artist
+	err := row.Scan(&i.ID, &i.Name)
+	return i, err
+}
+
+const updateArtist = `-- name: UpdateArtist :exec
+UPDATE artists 
+SET name = ?
+WHERE id =?
+`
+
+type UpdateArtistParams struct {
+	Name string
+	ID   int64
+}
+
+func (q *Queries) UpdateArtist(ctx context.Context, arg UpdateArtistParams) error {
+	_, err := q.db.ExecContext(ctx, updateArtist, arg.Name, arg.ID)
+	return err
+}