Add note about Linux compatibility

[ChaoticByte]

I have the following specs:

• Ubuntu 24.04.3 LTS x86_64
• CPU: Intel 13th Gen
• GPU: NVIDIA GeForce RTX 4070 SUPER
• Monitor: 1920x1080 @ 240 Hz

Works for me out of the box.

Maybe you could add "partial Linux compatibility" (or similar) to the Requirements section in the Readme?
That would encourage Linux Users to try it out :)

[pointydev]

Working on Fedora 42 with Godot v4.4.1.stable.fedora [49a5bc7b6] and an RX 9070 XT.

[kooshi]

I didn't even see the note about Windows.
Works fine for me in Arch with Wayland.