feat: merge configs and maintain only eslint-config-ns

[natterstefan]

Feature Request

Ever since the introduction of the changes in #67, one can merge the packages again and ship all rules (javascript, typescript, jest, ...) in one config (preset) file. Thanks to https://www.npmjs.com/package/@rushstack/eslint-patch, this works without asking users to install eslint-plugin-react in a non-react project.

Decision

• deprecate other packages with deprecation notice on npm (https://docs.npmjs.com/cli/v8/commands/npm-deprecate)?