Add update all button to plugin list

[JohnnyCrazy]

Also:

• Streamline styling for the plugin list buttons

Please tick as appropriate:

• I have tested this code on a steam deck or on a PC
• My changes generate no new errors/warnings
• This is a bugfix/hotfix
• This is a new feature

If you're wanting to update a translation or add a new one, please use the weblate page: https://weblate.werwolv.net/projects/decky/

Description

This fixes issue: #461

We might need to pull the translations into weblate first? IDK how it is setup @RodoMa92

Screenshots

[RodoMa92]

As soon as this is merged it will be picked up automatically, so we do not need to do anything right now :)

[TrainDoctor]

@SteamDeckHomebrew/decky-testers

[PartyWumpus]

Works well on my deck (Main steamos, beta client) and my PC with one or more plugins to update.

Also, if you hadn't noticed, if the update all button is there then it shifts the plugin list down a bit.


This is the only 'problem' I've found (although it could be intentional, if so then it's fine)

[nabel0]

Works also well for me on steamOS stable

[TrainDoctor]

Testers give their ascent, off to production.