Select instances in host using double click on publish instances

[FuzzkingCool]

A new feature that allows users to double-click on instances in the publisher overview widget to trigger selection and focus of the corresponding nodes/objects in the host DCC's current file. The selection logic is integrated with Creator plugin specific hooks, so this pull request is only to enable the ability for a Creator to implement the selection logic.

UI interaction improvements:

• Updated double-click event handlers in overview_widget.py to use a new method _on_instances_double_clicked, enabling selection of instances in the host DCC on double-click.
• Implemented the _on_instances_double_clicked method to call the controller's select_instances_in_host and emit the publish tab navigation, ensuring UI responsiveness even if selection fails.

Backend selection logic:

• Added select_instances_in_host to the controller in control.py, delegating selection requests to the model.
• Implemented select_instances_in_host in the model (create.py), invoking Creator specific select_in_host hooks for each instance, with error handling to avoid UX interruptions.

[iLLiCiTiT]

We'll have a discussion about this. The functionality to select something in the scene is good feature, but we're not convinced if double click is the way to go and if simple method to do so is enough (if this can cover all the use-cases that would came when added).

[FuzzkingCool]

Sounds good. I implemented the Creator method in my Harmony creators which allow users to quickly find nodes and template backdrops in the Node View for instance, and it has proven useful in production.

[iLLiCiTiT]

Sounds good. I implemented the Creator method in my Harmony creators which allow users to quickly find nodes and template backdrops in the Node View for instance, and it has proven useful in production.

Which covers one use-case but not all of them -> we'll need something more extendable, and with deterministic approach how to ask "if is possible" and "what options there are". I think right-click could show actions to run, so UI can ask controller and create plugins if they want to show actions to do on the selection.