feat: extract accepts files as cli option

[semoal]

Will close #510

I've adjusted also the help.ts function because when running yarn extract src/ --verbose was leading to confusion because params were passed also to yarn compile command.

On create-react-app example of Lingui projects results are really good:

New version with files param:

yarn extract src/ 1.47s user 0.26s system 111% cpu 1.709 total

Actual code branch without files filter:

yarn extract 4.19s user 0.33s system 135% cpu 3.345 total

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[codecov]

Codecov Report

Merging #881 (50771fe) into main (a53e12f) will increase coverage by 0.15%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##             main     #881      +/-   ##
==========================================
+ Coverage   82.76%   82.91%   +0.15%     
==========================================
  Files          51       51              
  Lines        1427     1440      +13     
  Branches      392      395       +3     
==========================================
+ Hits         1181     1194      +13     
  Misses        145      145              
  Partials      101      101              

Impacted Files	Coverage Δ
packages/react/src/I18nProvider.tsx	83.87% <ø> (ø)
...ackages/babel-plugin-extract-messages/src/index.ts	82.11% <50.00%> (-2.24%)	⬇️
packages/cli/src/api/catalog.ts	80.97% <100.00%> (+0.47%)	⬆️
packages/core/src/dev/loadLocaleData.ts	100.00% <0.00%> (+100.00%)	⬆️

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[tricoder42]

Looks great! Just one minor point, but the code works well.

[tricoder42]

Just another awesome feature! Good job! 👍

[semoal]

Just another awesome feature! Good job! 👍

We ship this tomorrow?

[tricoder42]

We ship this tomorrow?

Let's wait a week or so and collect other fixes/features on the way.