feat: Implemented the download of eQSL

internal/qso/qso.go

@@ -1890,6 +1890,19 @@ func (r *Repo) MarkQRZConfirmed(ctx context.Context, id int64, date string) erro
 	return nil
 }
 
+// MarkEQSLConfirmed stamps EQSL_QSL_RCVD=Y and the received date on a QSO after
+// an eQSL Inbox download. date is an ADIF YYYYMMDD string.
+func (r *Repo) MarkEQSLConfirmed(ctx context.Context, id int64, date string) error {
+	_, err := r.db.ExecContext(ctx,
+		`UPDATE qso SET eqsl_rcvd = 'Y', eqsl_rcvd_date = ?,
+		   updated_at = ? WHERE id = ?`,
+		date, db.NowISO(), id)
+	if err != nil {
+		return fmt.Errorf("mark eqsl confirmed %d: %w", id, err)
+	}
+	return nil
+}
+
 // MarkLoTWConfirmed stamps LOTW_QSL_RCVD=Y and the received date on a QSO
 // after a LoTW confirmation download. date is an ADIF YYYYMMDD string.
 func (r *Repo) MarkLoTWConfirmed(ctx context.Context, id int64, date string) error {