fix: render PDF attachments on every platform

Fixes #1243

Cargo.toml

@@ -37,6 +37,7 @@ cadkernel-constraints = { git = "https://github.com/HakanSeven12/cadkernel.git",
 dwg-thumbnailer = { path = "crates/dwg-thumbnailer" }
 flate2 = "1"
 image = { version = "0.25", default-features = false, features = ["png", "jpeg", "bmp", "tiff"] }
+hayro = "0.7.1"
 # Rasterises assets/logo.svg into the window icon at startup, so the taskbar
 # icon comes from the same file every other build target does. Already in the
 # tree behind iced's svg feature; named here only to use it directly.