#5013 - Ability to style HTML documents to be like chats

[reckart]

What's in the PR

• Ability to filter attributes based on attribute name patterns (e.g. assign a policy to all attributes matching data-.*)
• Added CSS classes for chat styling that can be used in the Apache Annotator HTML editor

How to test manually

• Import the provided example file in inception/inception-io-xml/src/main/ts/examples/dialogue.html

Automatic testing

• [ ] PR includes unit tests

Documentation

• [ ] PR updates documentation