Feature/v2/compare tool

[EthanHealy01]

Description of Changes

• Addition of the compare tool

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Checklist

General

• I have read the Contribution Guidelines
• I have read the Stirling-PDF Developer Guide (if applicable)
• I have read the How to add new languages to Stirling-PDF (if applicable)
• I have performed a self-review of my own code
• My changes generate no new warnings

Documentation

• I have updated relevant docs on Stirling-PDF's doc repo (if functionality has heavily changed)
• I have read the section Add New Translation Tags (for new translation tags only)

UI Changes (if applicable)

• Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR)

Testing (if applicable)

• I have tested my changes locally. Refer to the Testing Guide for more details.

[stirlingbot]

✅ Frontend License Check Passed

All frontend licenses have been validated and no compatibility warnings were detected.

The frontend license report has been updated successfully.

[reecebrowne]

Once you hit compare need to block selection or open the new view with loading as you can break it by deselecting a file

[reecebrowne]

Hit compare then swap pdf, the compare is rerunning but I am sat in file editor wondering what I am supposed to do. That swap PDF button is confusing when first uploading files, isn't really needed until we load in and probably should be within the view or the right rail rather than the toolstep

[reecebrowne]

Virtualised scroll is too aggressive, needs an overscan buffer so we aren't loading only when in view

[reecebrowne]

Loading bar stuck

[reecebrowne]

Zoom needs to be tied to scroll bar, need to fix scaling one or both of theviews break most of the time when I zom in and out (master zoom)

[reecebrowne]

Would be nice on ultrawide/more zoomed out views to make use of the space when we are zooming

[stirlingbot]

🚀 V2 Auto-Deployment Complete!

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