Update linting to latest standard / prettier

This uses ESLint 8.x, the maintained `eslint-plugin-n` fork of `eslint-plugin-node` (which I co-maintain), latest `eslint-config-standard` (which I also co-maintain) and drops the no longer needed `eslint-plugin-standard`

See: eslint-community/eslint-plugin-n#100

Author: voxpelli