Ubuntu Sway 26.04

This is a stable release of Ubuntu Sway Remix 26.04 'Resolute Raccoon'. Whats new? PCManFM is replaced by Thunar, as it maintains much better and contains nice improvements; lximage-qt is replaced by Ristretto; Engrampa is replaced by Xarchiver; removed Thunderbird and Audacious from base system; custom notification's script is replaced with SwayOSD; Vulkan renderer is enabled by default for NVIDIA GPUs; arm64 ISO image is available for UEFI-compatible ARM computers, e.g. Ampere Altra, Lenovo with Snapdragon CPU or virtual machines on Apple Silicon; various improvements for the Raspberry Pi image.