chore: update Cargo.toml with improved metadata and dependency organization

Author: aarkegz

Cargo.toml

@@ -1,35 +1,37 @@
 [package]
-edition = "2024"
 name = "arm_vcpu"
 version = "0.1.1"
+edition = "2024"
 authors = [
     "KeYang Hu <keyang.hu@qq.com>",
     "Mingxian Su <aarkegz@gmail.com>",
     "ShiMei Tang <shimei820@gmail.com>",
     "DeBin Luo <luodeb@outlook.com>",
     "周睿 <zrufo747@outlook.com>"
 ]
-description = "Aarch64 VCPU implementation for Arceos Hypervisor"
-license = "MIT OR Apache-2.0"
-repository = "https://github.com/arceos-hypervisor/arm_vcpu"
 categories = ["embedded", "no-std"]
+description = "Aarch64 VCPU implementation for Arceos Hypervisor"
 keywords = ["hypervisor", "aarch64", "vcpu"]
+license = "Apache-2.0"
+repository = "https://github.com/arceos-hypervisor/arm_vcpu"
 
 [features]
 4-level-ept = []
 
 [dependencies]
-log = "0.4"
-spin = "0.10"
-
-aarch64-cpu = "10.0"
-numeric-enum-macro = "0.2"
-tock-registers = "0.9"
+# Utility libraries
+log = "0.4"  # Logging framework
+spin = "0.10"  # Spinlock primitives
 
-axerrno = "0.1.0"
-percpu = {version = "0.2.0", features = ["arm-el2"]}
+# Hardware and register access
+aarch64-cpu = "10.0"  # AArch64 CPU register definitions and access
+numeric-enum-macro = "0.2"  # Macro for numeric enums
+tock-registers = "0.9"  # Register access traits and interfaces
 
-axaddrspace = "0.1"
-axdevice_base = "0.1.0"
-axvcpu = "0.1.0"
-axvisor_api = "0.1.0"
+# ArceOS and AxVisor libraries
+axerrno = "0.1.0"  # Error handling types
+percpu = {version = "0.2.0", features = ["arm-el2"]}  # Per-CPU data structures
+axaddrspace = "0.1"  # Address space management
+axdevice_base = "0.1.0"  # Base device abstractions
+axvcpu = "0.1.0"  # VCPU abstraction interface
+axvisor_api = "0.1.0"  # Hypervisor API definitions