feat: Adding ClusterAnalysisTemplate support for Stage verifications

[BenHesketh21]

closes #2481

ClusterAnalysisTemplate Support

This PR adds the ability to refer to cluster level analysis templates using the clusterScope option (inspired by Argo Rollouts).
The verification process finds all the templates and combines them in one run, in the same way as before but now will also find referenced ClusterAnalysisTemplates if clusterScope is set to true.
The UI has also been updated to show both scopes of analysis templates.

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[codecov]

Codecov Report

Attention: Patch coverage is 81.71429% with 32 lines in your changes missing coverage. Please review.

Project coverage is 52.59%. Comparing base (676c644) to head (72e799a).

Files with missing lines	Patch %	Lines
internal/rollouts/analysis_run_builder.go	66.66%	13 Missing and 2 partials ⚠️
...ternal/api/get_clusteranalysistemplate_v1alpha1.go	82.00%	6 Missing and 3 partials ⚠️
...ntroller/rollouts/api/v1alpha1/analysis_helpers.go	72.22%	5 Missing ⚠️
...rnal/api/list_clusteranalysistemplates_v1alpha1.go	85.71%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2673      +/-   ##
==========================================
+ Coverage   52.47%   52.59%   +0.11%     
==========================================
  Files         292      295       +3     
  Lines       26733    26868     +135     
==========================================
+ Hits        14029    14132     +103     
- Misses      11939    11965      +26     
- Partials      765      771       +6     

☔ View full report in Codecov by Sentry.
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[krancour]

@BenHesketh21 thank you for your patience with this. I've finally started reviewing this in earnest. What I've looked at so far looks solid, but this is big and there's a lot more to still look at.

Due to the size and complexity, I'm going to ask @hiddeco and @Marvin9 for help with this. Group effort.

@hiddeco since this touches the Stages reconciler, which you are actively refactoring, controller changes here probably need to be on your radar.

@Marvin9 if you don't mind looking at the UI portions of this, it would be a huge help.

I am happy to review the remainder -- e.g. API server changes, docs, and such.

We will try to get this into v1.1.0, but it cannot be guaranteed.

[BenHesketh21]

I've done the main parts of this, just waiting to see what the tabs should look like if they need to be vertical. I've put it in a horizontal one for now as it was the default. But the settings page with different tabs should be working.

[Marvin9]

Sure thing @BenHesketh21 here is how I imagine it would look like considering more settings incoming

Let me know if its feasible to you otherwise I would refactor the layout later this PR and for now we can keep the tab as in your screenshot. I will put my comments after we finalise what are we scoping for this PR. Thanks!

[BenHesketh21]

@Marvin9 Apologies for the delay, I had to re-do a lot of the controller work due to the refactor, I have moved the tab to be vertical. Let me know what you think.

[krancour]

We're trying to wrap up v1.2 work by 12/20 with plans to release after the holidays.

It might be too ambitious for us to get this merged before then. I'm tentatively moving this to the v1.3 milestone, but if it somehow becomes possible to sneak this into v1.2, I won't hesitate.

[Marvin9]

Sorry @BenHesketh21 do you mind if I change the design a bit? just adjusting color, spacing and layout.. Other than that I don't think there is anything that should block UI

[BenHesketh21]

@Marvin9 Please be my guest. UI isn't my strongest area.

[Marvin9]

Done with the UI and it LGTM! Thanks @BenHesketh21

@krancour it is now ready to review the rest of the things..

[hiddeco]

Implementation-wise, this all looks pretty straight-forward and is a job well done.

I just have a minor suggestion in how a ClusterAnalysisTemplate is referenced, please see my comment.

[hiddeco]

Tested this end-to-end, and everything is working as expected. Great work @BenHesketh21, and you should be done here.

There appears to be a small issue with the UI however, @Marvin9: