Add mouse and clean virtio

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
 resolver = "3"
-members = ["crates/io","crates/os-std", "crates/shared", "user/*"]
+members = ["crates/bytes-struct","crates/io","crates/os-std", "crates/shared", "user/*"]
 
 [package]
 name = "kernel-rust"
@@ -11,6 +11,7 @@ edition = "2024"
 bitflags = "2"
 embedded-alloc = "0.7"
 kernel-macros = { path = "crates/kernel-macros" }
+bytes-struct = { path = "crates/bytes-struct" }
 log = "0.4"
 critical-section = { version = "1", features = ["restore-state-bool"] }
 bffs = { path = "crates/bffs", features = ["alloc"] }