show error when create table failed on tablet

[vagetablechicken]

Only a boolean status now. We should check the tablet log to know the error reason.

OpenMLDB/src/client/tablet_client.cc

Lines 202 to 209 in 242ad02

	::openmldb::api::CreateTableResponse response;
	bool ok = client_.SendRequest(&::openmldb::api::TabletServer_Stub::CreateTable, &request, &response,
	FLAGS_request_timeout_ms * 2, 1);
	if (ok && response.code() == 0) {
	return true;
	}
	return false;
	}

OpenMLDB/src/client/tablet_client.cc

Lines 218 to 221 in 242ad02

	if (ok && response.code() == 0) {
	return true;
	}
	return false;

[dl239]

done in #3434