fix: Deterministic sort list in output to avoid random order

[tonur]

Solves one part of this issue:

• [BUG] dyff between command is non deterministic and uses 2 different styles randomly #525

With some additional features added to solve machine readable feature request in this PR:

• feat: Add simple output to allow consitent machine readable output #531

YAML comparison to avoid non-deterministic random output:

• The getNonStandardIdentifierFromNamedLists function in pkg/dyff/core.go now sorts keys before iterating, ensuring deterministic order when comparing named lists. This prevents inconsistent results due to map iteration order.

Test fixture updates:

• The test fixture files assets/issues/issue-525/from.yaml and assets/issues/issue-525/to.yaml have been updated with new and modified entries, reflecting changes in image tags, digests, and additional images for more comprehensive testing. [1] [2]

Output formatting:

• The generateHumanDetailOutputAddition method in pkg/dyff/output_human.go now uses the report's configured indent value instead of a hardcoded value, ensuring consistent output formatting.

Example that this is deterministic:
One sample:

Many samples:

[tonur]

I don't know if this is a fix or a feat.
I will use fix in the PR title, but please tell me to change it if you disagree.

[tonur]

Any chance that this could get a review?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.32%. Comparing base (a61af3d) to head (9770607).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #527      +/-   ##
==========================================
+ Coverage   82.27%   82.32%   +0.05%     
==========================================
  Files          17       17              
  Lines        1760     1765       +5     
==========================================
+ Hits         1448     1453       +5     
  Misses        236      236              
  Partials       76       76              

Flag	Coverage Δ
unittests	82.32% <100.00%> (+0.05%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[HeavyWombat]

Tak! I am sorry that it took so long to look into this. There are maybe two things I would like to tweak, but I need to play around with it locally first before making up my mind. So I will use your work here as the basis for that. Again, thank you very much for making me aware of the issue.

[tonur]

@HeavyWombat no worries, thank you so much for taking the time to look at this! And thank you for making such a great tool.

When you have tweaked the change to your liking, I also see immense value of implementing this thing: #531
Please let me know if I can do anything to help!