[Feature Request] Have a centralized page to view all ongoing tasks and progress bar

[L0Lock]

This is pretty much a follow up on Information is missing when installing programs using Pop Shop. · Issue #445 · pop-os/shop.

I think it is important to have a centralized place where the user can see all instalation/uninstallation/updates being done, with each tasks's progress bar, and nice-to-have a global progress bar and individual/global ETAs. And icing on the cake would be to even show network and disk speed with even a graph, but again: icing on the cake.

The reason why I and other people think this is needed is because it is otherwise hard to really know what's going on. We do have progress bars on the update page and on an app's page when installing:

But it's a poor user experience having to jump across multiple pages to know what's going on, and I don't expect every user to guess they could do that and remember where are all the pages they need to check. And it is a necessary user experience to be able to see what is going on without having to jump hoops.

I'm quoting a message from the original discussion on the pop shop:

Joshfindit commented last week

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There are many many valid reasons for the user to have a long install:

1. A multi-GB install
2. Slow internet (possibly including packet loss that the user cannot control)
3. Slow drives
4. An old CPU
5. Some type of underlying hardware issue causing system slowdowns

And it's normal/expected for users to fall in to one of three categories:

1. impatient: "I want this right now, what's taking so long"
2. Multitasking: "If this is going to take a while I'll just go do something else while it works"
3. Concerned: "Is this still working?/Is something broken right now?"

In all cases the lack of any kind of progress is a poor experience.

Worth noting: It "adds insult to injury" when the "Installing..." modal plays hide and seek with the cursor.

[LiamillionSS]

If there hasn't been design work done yet, this sounds like something that could be incorporated into the Updates tab. Anything being downloaded could be added there instead of creating a new section