Fix Get agent balance

src/Managing.Infrastructure.Database/AgentBalanceRepository.cs

@@ -49,7 +49,8 @@ public class AgentBalanceRepository : IAgentBalanceRepository
                        $"|> range(start: {start:s}Z" +
                        (end.HasValue ? $", stop: {end.Value:s}Z" : "") +
                        $") " +
-                       $"|> filter(fn: (r) => r[\"agent_name\"] == \"{agentName}\")";
+                       $"|> filter(fn: (r) => r[\"agent_name\"] == \"{agentName}\") " +
+                       $"|> pivot(rowKey: [\"_time\"], columnKey: [\"_field\"], valueColumn: \"_value\")";
 
             var result = await query.QueryAsync<AgentBalanceDto>(flux, _influxDbRepository.Organization);