Fix - Improve performance of 'My devices' dropdown with lazy loading

[RomainLvr]

Checklist before requesting a review

Please delete options that are not relevant.

• I have read the CONTRIBUTING document.
• I have performed a self-review of my code.
• I have added tests that prove my fix is effective or that my feature works.
• This change requires a documentation update.

Description

• It fixes !39261
• Here is a brief description of what this PR does

Problem

The "My devices" dropdown loads all user devices synchronously, causing slow page loads for users with many devices and potential timeouts.

Solution

• Implement lazy loading with AJAX endpoint for asynchronous device loading
• Add pagination and search to handle large datasets efficiently
• Group devices hierarchically by type for better organization

This follows GLPI's standard dropdown patterns and eliminates performance bottlenecks on ticket pages.

Screenshots (if appropriate):

Before :

After :

[stonebuzz]

seems good for me

[cedric-anne]

It seems OK.

Can you apply this patch on the customer's instance to get his feedback?

[RomainLvr]

It seems OK.

Can you apply this patch on the customer's instance to get his feedback?

Yep 👍

[trasher]

Looks good to me as well.

Maybe could you add at least a few tests cases on the newly added method?