Remove Config type.

[cpojer]

Summary

Next diff in the sea of diffs to split up configs. This removes the Config type completely. I have follow-ups where I start to pull things apart properly and remove fields from either ProjectConfig or GlobalConfig.

Test plan

jest

[cpojer]

I removed this file in a later commit (not yet sent out) already where I fix up how updateConfig works. At that point, we won't be passing updateConfig to ProjectConfig any more and this test will not be useful any more. I have new tests that make sure this works in a follow-up.

[cpojer]

Right now, the return value of normalize returns an "options" object which is GlobalConfig & ProjectConfig (basically what Config was). We should change this over time and we'll have to fix up many tests that rely on this (see the rename of .config to options). I made the minimal changes to make the tests work and it seems to be good enough for now.

[codecov-io]

Codecov Report

Merging #3366 into master will decrease coverage by 0.8%.
The diff coverage is 20%.

@@            Coverage Diff             @@
##           master    #3366      +/-   ##
==========================================
- Coverage   64.89%   64.09%   -0.81%     
==========================================
  Files         176      176              
  Lines        6521     6526       +5     
  Branches        4        4              
==========================================
- Hits         4232     4183      -49     
- Misses       2288     2342      +54     
  Partials        1        1

Impacted Files	Coverage Δ
packages/jest-config/src/constants.js	100% <ø> (ø)	⬆️
packages/jest-config/src/normalize.js	89.54% <ø> (ø)	⬆️
packages/jest-jasmine2/src/setup-jest-globals.js	0% <ø> (ø)	⬆️
packages/jest-environment-node/src/index.js	69.56% <ø> (ø)	⬆️
packages/jest-environment-jsdom/src/index.js	0% <ø> (ø)	⬆️
packages/jest-jasmine2/src/index.js	0% <0%> (ø)	⬆️
packages/jest-jasmine2/src/jest-expect.js	0% <0%> (ø)	⬆️
packages/jest-config/src/index.js	26.08% <33.33%> (ø)	⬆️
packages/jest-cli/src/runJest.js	0% <0%> (-59.04%)	⬇️

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[cpojer]

In the interest of time, I'm gonna go forward with this. If there are any concerns with this direction, please let me know and I'll revert or fix.

[github-actions]

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