Admin can add staff admin as in Django Admin page

[adamspd]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 98.39357% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 95.19%. Comparing base (5ea883b) to head (88d5426).

Files	Patch %	Lines
appointment/tests/base/base_test.py	84.21%	3 Missing ⚠️
appointment/tests/test_views.py	99.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #170      +/-   ##
==========================================
+ Coverage   95.12%   95.19%   +0.07%     
==========================================
  Files          49       49              
  Lines        5739     5828      +89     
==========================================
+ Hits         5459     5548      +89     
  Misses        280      280              

Flag	Coverage Δ
unittests	95.19% <98.39%> (+0.07%)	⬆️

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