Add auto-update configuration options

### Your use case

#### What would you like to do?
Control/disable automatic downloads of updates.

#### Why would you like to do it?
I don't like when software automatically downloads stuff without my permission in any circumstances, but especially given that I'm currently on a slow and somewhat metered connection, it's an especially big problem. I just saw that it had an update available and debated whether I wanted to download another >100MB file after I just downloaded it to install it the other day. I decided to go ahead just so I could be sure to be using the latest version before submitting some feature requests and bug reports I have planned, and was surprised to find it updated instantly, meaning it had already downloaded it. This means it's using data I don't necessarily want used, downloading data to my computer without my knowledge or permission, and slowing down my other online activities due to using my limited bandwidth behind the scenes.

#### How would you like to achieve it?
There should be an option in the settings like with Windows updates that allows the user to choose how to handle updates:

- notify only
- download and notify
- download and install/restart automatically

### Have you considered any alternatives?

_No response_

### Additional context

_No response_