feat: added db transactions abstraction; cleaned up user registration; repos adapted new abstraction: all repos now support transactions, if present in ctx

internal/repository/store.go

@@ -0,0 +1,23 @@
+package repository
+
+import "database/sql"
+
+type Store struct {
+	*Transactor
+	Auth   *AuthRepo
+	Invite *InviteRepo
+	List   *ListRepo
+	User   *UserRepo
+}
+
+func NewStore(db *sql.DB) *Store {
+	t := NewTransactor(db)
+	r := NewRepo(t)
+	return &Store{
+		Transactor: t,
+		Auth:       &AuthRepo{r},
+		Invite:     &InviteRepo{r},
+		List:       &ListRepo{r},
+		User:       &UserRepo{r},
+	}
+}