style: add `.editorconfig` to enforce editor config
style: add `.editorconfig` to enforce editor config

kaeluka/linter,Arcanemagus/linter,josa42/Linter,mdgriffith/linter,elkeis/linter,JohnMurga/linter,UltCombo/linter,AsaAyers/linter,DanPurdy/linter,steelbrain/linter,levity/linter,blakeembrey/linter,e-jigsaw/Linter,shawninder/linter,iam4x/linter,atom-community/linter,AtomLinter/Linter