Add projects config validation

[leonardovillela]

Summary

Closes #9761.

Test plan

Unit tests added.

[leonardovillela]

@jeysal

[codecov-io]

Codecov Report

Merging #9767 into master will increase coverage by 0.01%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##           master    #9767      +/-   ##
==========================================
+ Coverage   64.87%   64.88%   +0.01%     
==========================================
  Files         288      288              
  Lines       12206    12210       +4     
  Branches     3023     3027       +4     
==========================================
+ Hits         7919     7923       +4     
  Misses       3646     3646              
  Partials      641      641              

Impacted Files	Coverage Δ
packages/jest-config/src/normalize.ts	76.92% <80.00%> (+0.25%)	⬆️

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[leonardovillela]

Hey, @SimenB anything wrong with this PR? If it needs some changes I can do it.

[SimenB]

No, I think this is good to go. @jeysal?

My only comment is that I'd like to solve this a bit more generally than just for testSequencer, but I'm not sure how that would look so we can definitely land this for now 👍

[jeysal]

I do think we should make this validation more generic - even if we don't have the beautiful io-tsish config validation mechanism we'd like at the moment, I think this is rather easily achievable. We have groupOptions inside jest-config - we can apply that to the project entry, take the projectConfig from the result, and throw if the globalConfig from the result contains anything.

[SimenB]

I think I'd like to solve this via #11963 (and then validating the output as well). Thanks for the PR though! (and help with the schema is very much welcome)

[github-actions]

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