CJS → ESM: wrapper - package.json updates #342

https://nodejs.github.io/package-examples/05-cjs-esm-migration/migrating-package-json/

• set "type": "module" (regardless of whether it was set to anything else before)
• potentially update file extensions in "exports", "imports", "main", and "types" (if they were previously set to CJS-specific file extensions: .cjs → .mjs, .cts → .mts, .d.cts → .d.mts).
• set "engines"