[Monitor Query] Add samples/docs for running big queries and overcoming API limits for size and record count

[scottaddie]

For details of the ask, see https://dev.azure.com/devdiv/DevDiv/_workitems/edit/1597918.

[azure-sdk]

Label prediction was below confidence level 0.6 for Model:ServiceLabels: 'Network - DNS:0.18043672,IoT:0.12156473,Azure.Core:0.06226784'