feat(contentful-apps): Stepper editor and Step editor apps

[RunarVestmann]

Stepper editor and Step editor apps

What

Why

Specify why you need to achieve this

Screenshots / Gifs

Attach Screenshots / Gifs to help reviewers understand the scope of the pull request

Checklist:

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Formatting passes locally with my changes
• I have rebased against main before asking for a review

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 180 lines in your changes missing coverage. Please review.

Project coverage is 36.61%. Comparing base (8b46f97) to head (569d24e).
Report is 42 commits behind head on main.

Files with missing lines	Patch %	Lines
...ful-apps/components/editors/stepper/StepEditor.tsx	0.00%	88 Missing ⚠️
...pps/contentful-apps/components/EntryListSearch.tsx	0.00%	48 Missing ⚠️
...-apps/components/editors/stepper/StepperEditor.tsx	0.00%	43 Missing ⚠️
...pps/pages/fields/generic-tag-group-items-field.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16435      +/-   ##
==========================================
- Coverage   36.72%   36.61%   -0.11%     
==========================================
  Files        6809     6821      +12     
  Lines      141179   142092     +913     
  Branches    40248    40544     +296     
==========================================
+ Hits        51846    52025     +179     
- Misses      89333    90067     +734     

Flag	Coverage Δ
contentful-apps	5.19% <0.00%> (-0.38%)	⬇️
web	1.81% <ø> (-0.01%)	⬇️

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

Files with missing lines	Coverage Δ
...tors/lists/GenericListEditor/GenericListEditor.tsx	0.00% <ø> (ø)
apps/web/components/Stepper/utils.ts	0.00% <ø> (ø)
...pps/pages/fields/generic-tag-group-items-field.tsx	0.00% <0.00%> (ø)
...-apps/components/editors/stepper/StepperEditor.tsx	0.00% <0.00%> (ø)
...pps/contentful-apps/components/EntryListSearch.tsx	0.00% <0.00%> (ø)
...ful-apps/components/editors/stepper/StepEditor.tsx	0.00% <0.00%> (ø)

... and 59 files with indirect coverage changes

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[datadog-island-is]

Datadog Report

Branch report: feature/contentful-apps-stepper-json-visuals
Commit report: 7587dd2
Test service: web

✅ 0 Failed, 84 Passed, 0 Skipped, 30.54s Total Time
➡️ Test Sessions change in coverage: 1 no change