feat: DIA-2214: Add new Pdf object tag

[hlomzik]

Can be used to display Pdf, only for classification.

<View>
  <Header value="Rate this article" />
  <Rating name="rating" toName="pdf" maxRating="10" icon="star" size="medium" />
  <Pdf name="pdf" value="$pdf" />
</View>

[netlify]

✅ Deploy Preview for label-studio-storybook ready!

Name	Link
🔨 Latest commit	977e611
🔍 Latest deploy log	https://app.netlify.com/sites/label-studio-storybook/deploys/6814ac40482499000820a8e7
😎 Deploy Preview	https://deploy-preview-7460--label-studio-storybook.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for heartex-docs ready!

Name	Link
🔨 Latest commit	977e611
🔍 Latest deploy log	https://app.netlify.com/sites/heartex-docs/deploys/6814ac40bef0f00008a81453
😎 Deploy Preview	https://deploy-preview-7460--heartex-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for label-studio-docs-new-theme ready!

Name	Link
🔨 Latest commit	977e611
🔍 Latest deploy log	https://app.netlify.com/sites/label-studio-docs-new-theme/deploys/6814ac40861c50000886879e
😎 Deploy Preview	https://deploy-preview-7460--label-studio-docs-new-theme.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.