Add Accordion for Experimental Settings (New Project)

What does this MR do and why?

Adds an Accordion component and uses it on the New Project page to wrap experimental settings.

Contributes to #433130 (closed)

Screenshots or screen recordings

How to set up and validate locally

1. Enable the support_sha256_repositories feature flag.
2. Visit create new project page (http://gdk.test:3000/projects/new#blank_project)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

changed milestone to %16.7

added backend featureaddition frontend groupsource code labels

assigned to @vyaklushin

added typefeature label

added devopscreate sectiondev labels

	2 Warnings
	featureaddition and featureenhancement merge requests normally have a documentation change. Consider adding a documentation update or confirming the documentation plan with the Technical Writer counterpart. For more information, see: The Handbook page on merge request types. The definition of done documentation.
	You've made some app changes, but didn't add any tests. That's OK as long as you're refactoring existing code, but please consider adding any of the maintenancepipelines, maintenancerefactor, maintenanceworkflow, documentation, QA labels.

	1 Message
	CHANGELOG missing: If this merge request needs a changelog entry, add the Changelog trailer to the commit message you want to add to the changelog. If this merge request doesn't need a CHANGELOG entry, feel free to ignore this message.

Reviewer roulette

Changes that require review have been detected!

Please refer to the table below for assigning reviewers and maintainers suggested by Danger in the specified category:

Category	Reviewer	Maintainer
backend	@rkumar555 (UTC+1, same timezone as author)	@sashi_kumar (UTC+0, 1 hour behind author)
frontend	@dstull (UTC-5, 6 hours behind author)	@eduardosanz (UTC+1, same timezone as author)

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Generated by Danger

mentioned in issue #433130 (closed)

Good

Allure report

allure-report-publisher generated test report!

e2e-test-on-gdk: test report for 1c277c98

expand test summary

+-----------------------------------------------------------------------+
|                            suites summary                             |
+------------------+--------+--------+---------+-------+-------+--------+
|                  | passed | failed | skipped | flaky | total | result |
+------------------+--------+--------+---------+-------+-------+--------+
| Manage           | 0      | 0      | 1       | 0     | 1     | ➖     |
| Plan             | 55     | 0      | 0       | 0     | 55    | ✅     |
| Govern           | 57     | 0      | 0       | 0     | 57    | ✅     |
| Data Stores      | 23     | 0      | 0       | 0     | 23    | ✅     |
| Create           | 52     | 0      | 9       | 0     | 61    | ✅     |
| Verify           | 31     | 0      | 0       | 0     | 31    | ✅     |
| Monitor          | 8      | 0      | 0       | 0     | 8     | ✅     |
| Framework sanity | 0      | 0      | 1       | 0     | 1     | ➖     |
| Package          | 0      | 0      | 1       | 0     | 1     | ➖     |
+------------------+--------+--------+---------+-------+-------+--------+
| Total            | 226    | 0      | 12      | 0     | 238   | ✅     |
+------------------+--------+--------+---------+-------+-------+--------+

Setting label(s) Category:Source Code Management based on groupsource code.

added Category:Source Code Management label

added 1 commit

• 1c277c98 - Try to implement a AccordionComponent

Compare with previous version

changed the description

added UX component:accordion labels

Thank you for working on this @vyaklushin

I am happy to help with the UX review when this is ready

changed milestone to %16.8

added missed:16.7 label

changed milestone to %16.9

added missed:16.8 label

assigned to @jerasmus