feat: onboarding wizard #2

[comatory]

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• I have discussed my proposed changes in an issue and have received approval to proceed.
• I have followed the coding standards of the project.
• Tests or benchmarks have been added or updated.
• Documentation has been updated on https://github.com/wundergraph/docs-website.
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PR (2) for onboarding wizard: routing + navigation

Parent: #2719

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 400 lines in your changes missing coverage. Please review.
✅ Project coverage is 1.58%. Comparing base (30179c4) to head (48b7707).

Files with missing lines	Patch %	Lines
studio/src/components/onboarding/step-1.tsx	0.00%	58 Missing and 1 partial ⚠️
studio/src/components/onboarding/step-4.tsx	0.00%	54 Missing and 1 partial ⚠️
.../src/components/onboarding/onboarding-provider.tsx	0.00%	49 Missing and 1 partial ⚠️
studio/src/hooks/use-onboarding-navigation.ts	0.00%	42 Missing and 1 partial ⚠️
...o/src/components/posthog-feature-flag-provider.tsx	0.00%	35 Missing and 1 partial ⚠️
studio/src/pages/onboarding/[step].tsx	0.00%	29 Missing and 1 partial ⚠️
studio/src/components/onboarding/step-2.tsx	0.00%	23 Missing and 1 partial ⚠️
studio/src/components/onboarding/step-3.tsx	0.00%	23 Missing and 1 partial ⚠️
studio/src/components/federatedgraphs-cards.tsx	0.00%	16 Missing ⚠️
studio/src/pages/onboarding/index.tsx	0.00%	15 Missing and 1 partial ⚠️
... and 7 more

❌ Your patch check has failed because the patch coverage (0.00%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.
❌ Your project check has failed because the head coverage (1.58%) is below the target coverage (30.00%). You can increase the head coverage or adjust the target coverage.

❗ There is a different number of reports uploaded between BASE (30179c4) and HEAD (48b7707). Click for more details.

HEAD has 18 uploads less than BASE

Flag	BASE (30179c4)	HEAD (48b7707)
	19	1

Additional details and impacted files

@@                                         Coverage Diff                                          @@
##           ondrej/eng-9192-onboarding-wizard-from-signup-to-live-metrics-01   #2720       +/-   ##
====================================================================================================
- Coverage                                                             27.09%   1.58%   -25.52%     
====================================================================================================
  Files                                                                   676     307      -369     
  Lines                                                                 80048   41882    -38166     
  Branches                                                                899     443      -456     
====================================================================================================
- Hits                                                                  21692     662    -21030     
+ Misses                                                                56691   40923    -15768     
+ Partials                                                               1665     297     -1368     

Files with missing lines	Coverage Δ
studio/src/hooks/use-session-storage.ts	0.00% <ø> (ø)
...io/src/components/dashboard/workspace-provider.tsx	0.00% <0.00%> (ø)
studio/src/components/app-provider.tsx	0.00% <0.00%> (ø)
studio/src/hooks/use-onboarding.ts	0.00% <0.00%> (ø)
studio/src/components/layout/onboarding-layout.tsx	0.00% <0.00%> (ø)
studio/src/lib/track.ts	0.00% <0.00%> (ø)
studio/next.config.mjs	0.00% <0.00%> (ø)
studio/src/pages/_app.tsx	0.00% <0.00%> (ø)
studio/src/components/federatedgraphs-cards.tsx	0.00% <0.00%> (ø)
studio/src/pages/onboarding/index.tsx	0.00% <0.00%> (ø)
... and 8 more

... and 380 files with indirect coverage changes

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