Fix N+1 queries in /api/v1/users/{username}/get_facilities/

[sainak]

Sentry Issue: CARE-MK

Transaction Name	/api/v1/users/{username}/get_facilities/
Parent Span	django.view - user-get-facilities
Repeating Spans (0)	db - SELECT COUNT(*) AS __count FROM facility_patientregistration WHERE (facility_patientregistration.deleted = %s AND facility_patientregistration.facility_id = %s AND facility_patientregistration.is_active = %s)
	db - SELECT COUNT(*) AS __count FROM facility_bed WHERE (facility_bed.deleted = %s AND facility_bed.facility_id = %s)

[satyam0601]

can we use the prefetch_related() to fetch for related objects in one query?
if yes can i work on this issue?

[rithviknishad]

@satyam0601 you can take up other issues that are not assigned.

[satyam0601]

Okay