Feature: Add digital signatures tab to properties window

[PMExtra]

Describe the solution/problem

I want to view and verify the digital signatures info in Files. I think we can add a tab in properties and show the signature details directly.

Requirements

• Similar design to hashes page
• Add details button/icon next to each item
• Clicking details should open the same window that File Explorer does

Files version

2.3.12.0

Windows version

10.0.19043.2006

[PMExtra]

@yaira2 Please let me know if you'd like to implement it or welcome the PR.

[yaira2]

@PMExtra A PR would be great, would you like to work on this?

[yaira2]

As far as design goes, we can do something similar to the hashes page.