[Backend] Add function to check host or staff

[Suryansh5545]

adds a function called is_user_a_staff_or_host to check and return true if user is staff or host or both

[codecov-commenter]

Codecov Report

Merging #4080 (94c459f) into master (96968d6) will decrease coverage by 3.17%.
Report is 985 commits behind head on master.
The diff coverage is 45.94%.

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@@            Coverage Diff             @@
##           master    #4080      +/-   ##
==========================================
- Coverage   72.93%   69.77%   -3.17%     
==========================================
  Files          83       20      -63     
  Lines        5368     3510    -1858     
==========================================
- Hits         3915     2449    -1466     
+ Misses       1453     1061     -392     

Files Changed	Coverage Δ
frontend/src/js/controllers/analyticsCtrl.js	80.72% <ø> (ø)
frontend/src/js/controllers/authCtrl.js	53.91% <8.33%> (-12.95%)	⬇️
frontend/src/js/controllers/permissionCtrl.js	36.36% <22.22%> (-63.64%)	⬇️
frontend/src/js/controllers/challengeCtrl.js	62.25% <38.62%> (-11.45%)	⬇️
frontend/src/js/controllers/updateProfileCtrl.js	82.55% <44.44%> (-10.30%)	⬇️
frontend/src/js/controllers/profileCtrl.js	63.77% <48.83%> (-29.09%)	⬇️
...ntend/src/js/controllers/challengeHostTeamsCtrl.js	70.50% <66.66%> (-1.18%)	⬇️
frontend/src/js/controllers/teamsCtrl.js	71.17% <75.00%> (ø)
frontend/src/js/controllers/challengeListCtrl.js	93.93% <98.07%> (-0.75%)	⬇️
frontend/src/js/controllers/ChallengeInviteCtrl.js	100.00% <100.00%> (ø)
... and 7 more

... and 63 files with indirect coverage changes

Files Changed	Coverage Δ
frontend/src/js/controllers/analyticsCtrl.js	80.72% <ø> (ø)
frontend/src/js/controllers/authCtrl.js	53.91% <8.33%> (-12.95%)	⬇️
frontend/src/js/controllers/permissionCtrl.js	36.36% <22.22%> (-63.64%)	⬇️
frontend/src/js/controllers/challengeCtrl.js	62.25% <38.62%> (-11.45%)	⬇️
frontend/src/js/controllers/updateProfileCtrl.js	82.55% <44.44%> (-10.30%)	⬇️
frontend/src/js/controllers/profileCtrl.js	63.77% <48.83%> (-29.09%)	⬇️
...ntend/src/js/controllers/challengeHostTeamsCtrl.js	70.50% <66.66%> (-1.18%)	⬇️
frontend/src/js/controllers/teamsCtrl.js	71.17% <75.00%> (ø)
frontend/src/js/controllers/challengeListCtrl.js	93.93% <98.07%> (-0.75%)	⬇️
frontend/src/js/controllers/ChallengeInviteCtrl.js	100.00% <100.00%> (ø)
... and 7 more

... and 63 files with indirect coverage changes

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