dev alias for frontend develop for AutoGen Studio

[brotsky]

Why are these changes needed?

Related issue number

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (223ac65) 30.14% compared to head (a2be34f) 30.14%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1083   +/-   ##
=======================================
  Coverage   30.14%   30.14%           
=======================================
  Files          30       30           
  Lines        4020     4020           
  Branches      908      908           
=======================================
  Hits         1212     1212           
  Misses       2729     2729           
  Partials       79       79           

Flag	Coverage Δ
unittests	30.09% <ø> (ø)

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[victordibia]

Thanks. This could make dev easier for users more familiar with yarn dev