Include the Workloads info in the stats endpoint

[Mahmoud-Emad]

Is your feature request related to a problem? Please describe

To add a new card to the dashboard stats page we need to access the workload key from the object which should hold the number of workloads that exist on the network

Describe the solution you'd like

https://gridproxy.dev.grid.tf/stats

[xmonader]

@Omarabdul3ziz please see if feasible

[Omarabdul3ziz]

done and on dev now ya omda @Mahmoud-Emad