Copy Data set bug + DeferredPromise format fix

[pujal0909]

What It Does

#2369
Added a new --safe-replace (--safe-rep) option to the copy command that prompts users to confirm whether they want to overwrite the contents of the target data set.

Also, made a small format fix on the DeferredPromise.ts and DeferredPromise.unit.test files.

How to Test

Use the --safe-replace flag with the copy command. A prompt will appear, where you can respond with "y/N".
zowe zos-files copy ds "data-set1" "data-set2" --safe-replace

Review Checklist
I certify that I have:

• tested my changes
• added/updated automated tests
• updated the changelog
• followed the contribution guidelines

Additional Comments

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 91.34%. Comparing base (f86212e) to head (98cdedb).

Files with missing lines	Patch %	Lines
packages/cli/src/zosfiles/copy/ds/Ds.handler.ts	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2413      +/-   ##
==========================================
+ Coverage   91.33%   91.34%   +0.01%     
==========================================
  Files         639      639              
  Lines       18248    18258      +10     
  Branches     3907     3947      +40     
==========================================
+ Hits        16666    16677      +11     
+ Misses       1580     1579       -1     
  Partials        2        2              

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[github-actions]

📅 Suggested merge-by date: 1/31/2025

[sonarqubecloud]

Quality Gate failed

Failed conditions
66.7% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud