Add Last Updated sort method in search results

• I have summed up the feature in concise words in the Summary section.
• I have completely described the feature in the Description section.
• I have completed the Blockers section.

Summary

In search results, example: https://aur.archlinux.org/packages?O=0&K=vmware

There are 6 columns to sort by:

• Name
• Votes
• Popularity
• Voted
• Notify
• Maintainer

Would like to add a really important one: Last Updated (the one you view once you enter each individual package).