feat(modem): method to configure APN/authentication

reach/client/operations.go

@@ -193,4 +193,18 @@ func (c *Client) SetBaseCorrections(ctx context.Context, funcs ...protocol.SetBa
 	}
 	return nil
 }
+
+// SetModem implements protocol.Operations.
+func (c *Client) SetModem(ctx context.Context, funcs ...protocol.SetModemOptionsFunc) error {
+	_, ops, err := c.getProtocol(ctx)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	if err := ops.SetModem(ctx, funcs...); err != nil {
+		return errors.WithStack(err)
+	}
+	return nil
+}
+
 var _ protocol.Operations = &Client{}