workflow-lite, duplicate conversation, conversation list updates

[bkrabach]

Reduces noise from workflow conversations:

• Adds parent_conversation_id as metadata on duplicated conversations
• Updates ConversationList to take optional:
  • parentConversationId: only show children of this conversation
  • hideChildConversations: hide children of the current level of conversations
• Global conversation list is set to hide child conversations
• Adds notice at start of workflow that includes new href metadata for link to workflow conversation
• Updates rendering of InteractMessage to use React Router links to wrap non-chat message content if href metadata is provided
• Updates UX docs regarding message metadata handling

Updates ConversationListOptions to allow bulk removal of conversations

Fixes status messages for workflow steps

Updates workflows config for user proxy workflow definitions:

• Steps now include a label for use in status messages
• User message input now uses multiline text field

Changed conversation_duplicate endpoint:

• post -> /conversations/{conversation_id}
• takes title for new conversation and optional metadata to merge w/ existing conversation metadata and add original_conversation_id

Removes commented out code for alt approach to conversation_duplicate via export/import