Update `.editorconfig` with json, svg, mdastrc, eslintrc
Update `.editorconfig` with json, svg, mdastrc, eslintrc

eush77/remark,ulrikaugustsson/mdast,tanzania82/remarks,yukkurisinai/mdast,chcokr/mdast,eush77/remark,chcokr/mdast,wooorm/remark,yukkurisinai/mdast,ulrikaugustsson/mdast