[TASK] Create RPC method `queryServiceRequestsWithBlueprintsByOperator` for querying pending service requests

[danielbui12]

Implement a new RPC method queryServiceRequestsWithBlueprintsByOperator to query all pending service requests associated with a specific operator and blueprints from the ServiceRequests storage

This RPC will return the pending service requests that match the given operator and blueprint IDs, allowing users to query the data in a paginated manner.

Example Usage:

queryServiceRequestsWithBlueprintsByOperator(operator:  "16ccn3xe5tAeR8kvzCRTcqHZjMJHvuF2pnLfTqyF1EmMusCU")