docs: prepare v9 migration guide

[matthewmayer]

alternative for #2788

concatenates the migration guide snippets. I tried to organize in a reasonably sensible order but didn't edit the content other than the headings.

EDIT: The merged page has been edited.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.95%. Comparing base (ecbe8c6) to head (96864f0).

Additional details and impacted files

@@           Coverage Diff           @@
##             next    #2805   +/-   ##
=======================================
  Coverage   99.95%   99.95%           
=======================================
  Files        2971     2971           
  Lines      212619   212619           
  Branches      946      947    +1     
=======================================
+ Hits       212527   212532    +5     
+ Misses         92       87    -5     

see 2 files with indirect coverage changes

[matthewmayer]

Can you trigger the netlify deploy so we have an easy way to preview this?

[Shinigami92]

Can you trigger the netlify deploy so we have an easy way to preview this?

You mean this? https://deploy-preview-2805.fakerjs.dev/

[matthewmayer]

Can you trigger the netlify deploy so we have an easy way to preview this?

You mean this? https://deploy-preview-2805.fakerjs.dev/

Thanks. https://deploy-preview-2805.fakerjs.dev/guide/upgrading.html

[ST-DDT]

IMO the Remove deprecated locale aliases is at the wrong location and should be maybe in front of https://deploy-preview-2805.fakerjs.dev/guide/upgrading.html#locale-aliases

[xDivisionByZerox]

@matthewmayer We applied some changes together in todays meeting. Please review them since we want to release an alpha version very soon.

[Shinigami92]

I would have suggestions, but nothing blocking
So we could do these changes in later iterations before doing an official release

[matthewmayer]

Same, I have minor feedback but looks great for now.