chore: update package.json for bin configuration and dependency versions

- Changed "bin" from a string to an object to specify command name "pkgtools".
- Updated devDependencies:
  - @types/node from ^22.15.21 to ^22.15.29
  - execa from ^9.5.3 to ^9.6.0
  - lint-staged from ^16.0.0 to ^16.1.0
  - npm-run-all2 from ^8.0.3 to ^8.0.4
  - oxlint from ^0.16.11 to ^0.16.12
  - tsdown from ^0.12.3 to ^0.12.5

Author: nice-winter