Fix incorrect error message shown due to Spectre.Console parsing

[christianhelle]

This relates to #583

This pull request includes a change to improve the error handling in the ExecuteAsync method of the GenerateCommand class. The main change involves simplifying the way exceptions are logged to the console.

Error handling improvement:

• src/Refitter/GenerateCommand.cs: Simplified the exception logging by using AnsiConsole.WriteException to print the exception details instead of manually formatting the message, exception type, and stack trace.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.90%. Comparing base (599ebf1) to head (1edc5f3).
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #585   +/-   ##
=======================================
  Coverage   94.90%   94.90%           
=======================================
  Files          53       53           
  Lines        2612     2612           
=======================================
  Hits         2479     2479           
  Misses         98       98           
  Partials       35       35           

Flag	Coverage Δ
unittests	94.90% <ø> (ø)

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