Cleanup JS code and add header toolbar

[benoit74]

Changes:

• simplify JS code by using a Pinia store to fetch data and store shared state, and share data and events between components
• add a HeaderBar to display logo + fetch shared data
• add error info component to nicely display bad issues "everywhere"

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.20%. Comparing base (f891b6a) to head (fc833b6).
Report is 10 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #73   +/-   ##
=======================================
  Coverage   44.20%   44.20%           
=======================================
  Files           9        9           
  Lines         328      328           
  Branches       41       41           
=======================================
  Hits          145      145           
  Misses        182      182           
  Partials        1        1           

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[rgaudin]

LGTM ;
I think it would help a lot if types had docstrings

[benoit74]

Good points, thanks a lot, fixed. Also opened #76 to question having a plugin to validate this documentation.