fix: fix module mock

[PaperStrike]

• Use create-require polyfill to fix Module.createRequire for Node.js <= 12.2.0.
• Use the mocked require to handle invocation of require created by createRequire.

eslint 7 - 8 fails for the promises, not for the mocks.

[codecov]

Codecov Report

Merging #12 (d66b44c) into eslint-8 (7023001) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           eslint-8       #12   +/-   ##
==========================================
  Coverage    100.00%   100.00%           
==========================================
  Files             9         9           
  Lines           181       181           
==========================================
  Hits            181       181           

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[PaperStrike]

cc @ljharb