feat: add pickBy

[yubaoquan]

Description

Please provide a detailed description of the changes and the intent behind them :)

Checklist

• [x] Changes are covered by tests if behavior has been changed or added
• [x] Tests have 100% coverage
• [x] If code changes were made, the version in package.json has been bumped (matching semver)
• [x] If code changes were made, the yarn build command has been run and to update the cdn directory
• [x] If code changes were made, the documentation (in the /docs directory) has been updated

Resolves

Resolves #157

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Name	Status	Preview	Comments	Updated (UTC)
radash-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 2, 2024 5:17pm

[aleclarson]

Hey @yubaoquan, we've merged this feature over at the Radashi fork, where we're bringing Radash to new heights. We've made a lot of improvements already, and it'd be great to have you there. 😄

You can install radashi@beta to use this feature today. An official release is pending.

_{P.S. You can read my post to learn more about the differences between Radashi and its predecessor.}