Import from trello: comments, images, attachments

[omggga]

Summary

This pull request significantly enhances the Trello import process by including comprehensive support for card attachments, images, and comments. It also introduces createdBy metadata tracking and addresses previously identified issues with checklist imports. Additionally, it ensures new items are properly linked to their respective boards and cards for a smoother integration.

Enhancements:

• Implemented the import of attachments, images, and comments to cards for a full-fidelity transfer.
• Added createdBy fields to track the creation time of cards and comments, preserving important metadata.
• Fixed existing issues related to checklist imports to ensure data consistency.
• Established robust links for newly added items with their corresponding boards and cards, enhancing data structure integrity.

[mattermost-build]

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[mattermost-build]

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[giuseongit]

@omggga please note that this entire project seems quite abandoned, I found this fork following this discussion that could be a replacement for a community-driven product