fix: import no longer brings up the Save dialog

[svienot]

Description:

• restore the dev target to what is was before (which will allow showSaveDialog() to be called again)
• add dev:attach target which sets-up the frontend to be able to attach the automation tests.

Related issue(s):

Fixes #2604

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.95%. Comparing base (509bfd3) to head (367986e).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2611   +/-   ##
=======================================
  Coverage   99.95%   99.95%           
=======================================
  Files         183      183           
  Lines        7410     7410           
  Branches     1478     1474    -4     
=======================================
  Hits         7407     7407           
  Misses          3        3           

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[ericleponner]

LGTM