add 'amd2cmd-webpack-plugin'

[JaredCen]

Transform the output library exposed as an AMD module into CMD module.

https://github.com/JunreyCen/amd2cmd-webpack-plugin

[jsf-clabot]

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0 out of 2 committers have signed the CLA.

❌ Junwei Cen
❌ Junrey

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[alexander-akait]

@JunreyCen rebase, also use English language in docs, thanks!