Uses `claimInterpreter`

[compulim]

Fixes #4870.

Changelog Entry

Fixed

• Fixes #4870. Originator should use claimInterpreter instead of ReplyAction/provider, by @compulim, in PR #4910

Description

Instead of using a ReplyAction/provider to specify the originator, we should use Claim/claimInterpreter. This allows every claim to have their own originator.

Specific Changes

• Moved Schema.org types to botframework-webchat-core
• Modified Schema.org type helpers: type is only needed for first-level things in Activity.entities

• [x] I have added tests and executed them locally
• [x] I have updated CHANGELOG.md
• [x] I have updated documentation

Review Checklist

This section is for contributors to review your work.

• [x] ~Accessibility reviewed (tab order, content readability, alt text, color contrast)~
• [x] ~Browser and platform compatibilities reviewed~
• [x] ~CSS styles reviewed (minimal rules, no z-index)~
• [x] ~Documents reviewed (docs, samples, live demo)~
• [x] ~Internationalization reviewed (strings, unit formatting)~
• [x] ~package.json and package-lock.json reviewed~
• [x] ~Security reviewed (no data URIs, check for nonce leak)~
• [x] Tests reviewed (coverage, legitimacy)