add missing schema properties

[tobiascadee]

• remove incremental stream from conversation_parts

• add a lot of missing properties

[Copilot]

Pull Request Overview

This PR removes incremental streaming from the conversation_parts stream and significantly expands schema coverage across multiple Intercom API entities. The changes add extensive missing properties to better capture the complete data structure from the API responses.

• Removal of incremental replication key from conversation_parts stream
• Addition of numerous missing schema properties across conversations, contacts, admins, tags, and articles
• Comprehensive expansion of nested object schemas with proper type annotations

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 6 comments.

File	Description
tap_intercom/streams.py	Removes replication_key from ConversationPartsStream to disable incremental syncing
tap_intercom/schemas.py	Adds extensive missing properties to multiple schema definitions including type fields, nested objects, and custom attributes

Comments suppressed due to low confidence (1)

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