chore: add Djade formatter

[GabDug]

Add Django template formatter Djade, and its pre-commit.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 62.50000% with 15 lines in your changes missing coverage. Please review.

Project coverage is 62.84%. Comparing base (0781914) to head (47c4a15).

Files with missing lines	Patch %	Lines
...ter/incidents/templates/pages/incident_detail.html	41.66%	7 Missing ⚠️
.../templates/layouts/partials/incident_timeline.html	0.00%	5 Missing ⚠️
...firefighter/incidents/templates/layouts/index.html	66.66%	1 Missing ⚠️
...r/incidents/templates/layouts/partials/header.html	92.30%	1 Missing ⚠️
...refighter/incidents/templates/pages/dashboard.html	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #105      +/-   ##
==========================================
- Coverage   62.88%   62.84%   -0.05%     
==========================================
  Files         215      215              
  Lines        9576     9573       -3     
  Branches     1286     1286              
==========================================
- Hits         6022     6016       -6     
- Misses       3346     3348       +2     
- Partials      208      209       +1     

Flag	Coverage Δ
unittests	62.84% <62.50%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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