feat: add --node-env flag

[snitin315]

What kind of change does this PR introduce?
feature

Did you add tests for your changes?
YES WIP
If relevant, did you update the documentation?
YES
Summary
fixes #2362

Does this PR introduce a breaking change?
NO

Other information

[codecov]

Codecov Report

Merging #2388 (eaf042b) into master (ad1a6b8) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2388      +/-   ##
==========================================
+ Coverage   71.74%   71.79%   +0.05%     
==========================================
  Files          47       47              
  Lines        2173     2177       +4     
  Branches      573      574       +1     
==========================================
+ Hits         1559     1563       +4     
  Misses        614      614              

Impacted Files	Coverage Δ
packages/webpack-cli/lib/webpack-cli.js	91.92% <100.00%> (+0.03%)	⬆️

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[alexander-akait]

Also need tests, anyway looks good

[alexander-akait]

@snitin315 let's finish, I want to do release, it is very high requested feature

[snitin315]

Need to fix CI, debugging.

[alexander-akait]

Let's convert from draft

[alexander-akait]

I will add some complex tests

[snitin315]

💯

[alexander-akait]

Thanks