add warning message

[sunkickr]

Description

Adding a warning to tell users when they will not be able to create deployment api keys anymore

🎟 Issue(s)

Related #XXX

🧪 Functional Testing

List the functional testing steps to confirm this feature or fix.

📸 Screenshots

Add screenshots to illustrate the validity of these changes.

📋 Checklist

• Rebased from the main (or release if patching) branch (before testing)
• Ran make test before taking out of draft
• Ran make lint before taking out of draft
• Added/updated applicable tests
• Tested against Astro-API (if necessary).
• Tested against Houston-API and Astronomer (if necessary).
• Communicated to/tagged owners of respective clients potentially impacted by these changes.
• Updated any related documentation

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (222ee51) 86.94% compared to head (7a6c7f8) 86.94%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1412   +/-   ##
=======================================
  Coverage   86.94%   86.94%           
=======================================
  Files         114      114           
  Lines       13950    13951    +1     
=======================================
+ Hits        12129    12130    +1     
  Misses       1084     1084           
  Partials      737      737           

Files	Coverage Δ
cmd/cloud/setup.go	56.63% <100.00%> (+0.19%)	⬆️

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