[Feature Request] Show Space Required for games before installation

[Adishone]

Feature description

As a user of Playnite that has temporary limited internet traffic
I would like to see how much space is required to install chosen game before installing it
That will allow me to easier plan what game am I going to install next

Suggested approach:
Before installing a game - show Required Space at the same place as Installation Size
After game installation hide Required Space and just show Installation Size

Steam is showing that, so I hope that it is possible

Screenshots

[Itaykal]

Looks like this feature's already implemented in #3017

Playnite/source/PlayniteSDK/Models/GameMetadata.cs

Line 301 in fdb2a86

public ulong? InstallSize { get; set; }

It's managed by the extension/plugin itself, maybe close this issue and create one in JosefNemec/PlayniteExtensions
Looks like the only built-in extension that implements that feature is GoG

I don't have much experience with .NET but if @JosefNemec Is accepting contributions I could gladly try to implement it for Steam and if it goes smoothly I could go for other built-ins :)

[JosefNemec]

This is currently only half implemented. In Playnite 11 there will be separate "estimated install size" for this that metadata plugins will be able to populate.