[lib,web,native,landing] [chore] update eslint config to correctly handle cjs files

Summary: update eslint config to ignore files, rather than add the comments, https://eslint.org/docs/user-guide/configuring/ignoring-code

Test Plan: go to webpack files, red swiggles are now gone.

Reviewers: atul, palys-swm, def-au1t, yayabosh, benschac

Reviewed By: benschac

Subscribers: ashoat, palys-swm, Adrian, karol-bisztyga, yayabosh

Differential Revision: https://phabricator.ashoat.com/D3761