[eas-cli] add exit option to eas credentials interactive menu

[szdziedzic]

Why

https://exponent-internal.slack.com/archives/C017N0N99RA/p1726226230206999

Right now the only way to exit the eas credentials command is to kill the process by doing ctrl+c. Let's add an exit option to the interactive menu.

How

Add exit option to menu.

Test Plan

Test manually

[szdziedzic]

• [eas-cli] add exit option to eas credentials interactive menu #2570 👈
• main

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[github-actions]

Size Change: -842 B (0%)

Total Size: 52.9 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	52.9 MB	-842 B (0%)

_{compressed-size-action}

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.

Project coverage is 51.89%. Comparing base (69014fe) to head (3f2f88e).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/eas-cli/src/credentials/manager/ManageAndroid.ts	0.00%	1 Missing and 1 partial ⚠️
...kages/eas-cli/src/credentials/manager/ManageIos.ts	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2570      +/-   ##
==========================================
- Coverage   51.89%   51.89%   -0.00%     
==========================================
  Files         563      563              
  Lines       21260    21266       +6     
  Branches     4341     4343       +2     
==========================================
+ Hits        11031    11033       +2     
- Misses       9341     9345       +4     
  Partials      888      888              

Flag	Coverage Δ
	51.89% <33.34%> (-<0.01%)	⬇️

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[github-actions]

✅ Thank you for adding the changelog entry!