Add support for Risk Intelligence Retrieve endpoint (#12)

* Bump version, add response types, reorganize files

* wip client

* Add support for Risk Intelligence retrieve, add tests

* Call risk intelligence retrieve regardless of captcha state in example

* Simplify example in readme

* Make example print error on missing risk intelligence

* Update to Node 22.x in CI

* Add missing API error codes

Bump to 0.2.1

Improve package.json with extra fields (#10)

Add "repository" which is required for Trusted Publishing, but
also useful for having a link to the repository on npmjs.com.

Add "files" (replacing .npmignore) which will remove these from
our published tarball:

- .github/
- .prettierrc
- example/
- src/
- test/
- tsconfig.json

Add "publishConfig" to be explicit, and prevents problems if we forget
`--access public` in CI.

Fix import without extension (#6)

* Fix import without extension

* Update package lock

Bump version number in example

No test in release