WD-8431 - Fetch and store secrets

[huwshimi]

Done

• Fetch and store secrets.

QA

• Set up a controller with Juju 3.3.1.
• Add some secrets to a model with: juju add-secret my-apitoken token=34ae35facd4
• Open the dashboard and navigate to the model.
• Click on the Secrets tab.
• The secrets should get fetch and displayed in a list.

Details

https://warthogs.atlassian.net/browse/WD-8431

[webteam-app]

Demo starting at https://juju-dashboard-1687.demos.haus

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e320315) 94.93% compared to head (ea6bb02) 95.05%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1687      +/-   ##
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+ Coverage   94.93%   95.05%   +0.11%     
==========================================
  Files         178      179       +1     
  Lines        5175     5274      +99     
  Branches     1502     1518      +16     
==========================================
+ Hits         4913     5013     +100     
+ Misses        242      241       -1     
  Partials       20       20              

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[vladimir-cucu]

Looks good to me! Tested it yesterday as described in the QA section and works as expected with local juju v3.3.1.