feat: Add support for displaying trail content in TreeViewItem component

[jdahlborg]

Description

Add support for displaying trail content in TreeViewItem component

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Name	Status	Preview	Updated (UTC)
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[endigo9740]

Hey @jdahlborg, we typically ask for prior discussion before non-trivial changes are implemented. Mainly to prevent overlap and redundancy. In this case, it would have been useful to alert you to the fact this feature is still actively in development:

• feat/rework-recursive-tree-view #2069

I'm going to ping @Mahmoud-zino, the author of this feature, to do a review of this and determine how we should move forward. We may need to close out your PR and fold this into his, or we might need to revisit it after his pending PR is merged.

Mahmoud, you have my full support for whatever you decide.

[Mahmoud-zino]

@jdahlborg @endigo9740
The added trail was requested previously and I don't have anything against it (it doesn't effect the functionality).
However we opted to a separate component for the recursive tree-view to make testing easier.

This means the TreeViewDataDrivenItem.svelte doesn't exist anymore and the changes should be made to the normal tree-view and RecursiveTreeView after merging this PR #2069

So I would say let's close this PR and wait until the rework PR is merged, after that you can create an issue and implement the change on the new component as well 👍

[endigo9740]

@Mahmoud-zino that makes sense.

@jdahlborg I'd recommend following this instruction. If you have any follow ups feel free to tag us here, or we're typically available in the #contributors channel on Discord.

Thanks!