Add nurse user type

[sainak]

This pull request adds a new user type called "Nurse" and migrates the existing staff users to the nurse role. It also includes updates to permissions checks.

[codecov]

Codecov Report

Attention: 73 lines in your changes are missing coverage. Please review.

Comparison is base (470ce0d) 61.05% compared to head (9aa2398) 61.23%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
care/facility/api/viewsets/bed.py	8.33%	11 Missing ⚠️
care/facility/models/shifting.py	38.88%	11 Missing ⚠️
...are/facility/models/mixins/permissions/facility.py	35.71%	7 Missing and 2 partials ⚠️
care/facility/api/viewsets/file_upload.py	50.00%	6 Missing ⚠️
care/facility/api/viewsets/hospital_doctor.py	14.28%	6 Missing ⚠️
care/facility/models/patient_sample.py	25.00%	6 Missing ⚠️
care/facility/models/daily_round.py	50.00%	4 Missing and 1 partial ⚠️
care/facility/models/mixins/permissions/patient.py	28.57%	4 Missing and 1 partial ⚠️
care/facility/models/mixins/permissions/base.py	0.00%	2 Missing and 1 partial ⚠️
care/facility/models/resources.py	25.00%	3 Missing ⚠️
... and 5 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1819      +/-   ##
==========================================
+ Coverage   61.05%   61.23%   +0.18%     
==========================================
  Files         208      208              
  Lines       11529    11524       -5     
  Branches     1656     1647       -9     
==========================================
+ Hits         7039     7057      +18     
+ Misses       4218     4199      -19     
+ Partials      272      268       -4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[nihal467]

LGTM

[vigneshhari]

Approved without review.