feat: Display When App and Patches were last Updated

[adanvdo]

Feature description

Add a way to easily see the date of the last app update and patches update

Motivation

I don't really care about change logs, but currently there is no way to know when patches or the app were last updated. This is really frustrating as an end user. The new minimal UI makes the app seem dormant without any information other than the manager app version number

Acknowledgements

• I have checked all open and closed feature requests and this is not a duplicate.
• I have chosen an appropriate title.
• The feature request is only related to ReVanced Manager.