Add Command Version Control

Add more comments(zh)
Optimize code structure
Update the loading order to avoid repeated loading to optimize startup speed.

Source/GrasscutterTools/Game/CommandVersion.cs

@@ -0,0 +1,94 @@
+using System;
+
+namespace GrasscutterTools.Game
+{
+    /// <summary>
+    /// 命令版本
+    /// 
+    /// 用法：
+    /// ver = Version.TryParse(input, out Version current) ? new CommandVersion(current) : CommandVersion.Latest();
+    /// 
+    /// </summary>
+    internal class CommandVersion
+    {
+        /// <summary>
+        /// 初始化当前版本
+        /// </summary>
+        /// <param name="current"></param>
+        public CommandVersion(Version current)
+        {
+            this.current = current ?? throw new ArgumentNullException(nameof(current));
+        }
+
+        private Version current;
+
+        /// <summary>
+        /// 当前命令版本
+        /// </summary>
+        public Version Current
+        {
+            get => current;
+            set
+            {
+                if (current != value)
+                {
+                    current = value;
+                    OnVersionChanged();
+                }
+            }
+        }
+
+        /// <summary>
+        /// 选中版本改变事件
+        /// </summary>
+        public event EventHandler VersionChanged;
+
+        /// <summary>
+        /// 触发版本更改事件
+        /// </summary>
+        private void OnVersionChanged() => VersionChanged?.Invoke(this, EventArgs.Empty);
+
+        /// <summary>
+        /// 当前支持的最新版本 - 当未选择版本时，默认为最新版本
+        /// </summary>
+        public static CommandVersion Latest() => new CommandVersion(List[List.Length - 1]);
+
+
+        #region - 版本列表 Version List -
+
+        // 忽略更早以前的版本
+        /// <summary>
+        /// v1.2.1  2022/6/18
+        /// git 30c7bb94439a123417a6a1e0116acd3c40f2d115
+        /// </summary>
+        public static readonly Version V1_2_1 = new Version(1, 2, 1);
+
+        /// <summary>
+        /// v1.2.1 -> v1.2.2  2022/6/22
+        /// git aa43943025fefcda9739c9fcf242e67f1a7b83b4
+        /// </summary>
+        public static readonly Version V1_2_2 = new Version(1, 2, 2);
+
+        /// <summary>
+        /// v1.2.2 -> v1.2.3  2022/7/21
+        /// git a07b3f21e6fbeb9abfad8862d6fa0dc4a1c3c1a3
+        /// </summary>
+        public static readonly Version V1_2_3 = new Version(1, 2, 3);
+
+        // More...
+        /// <summary>
+        /// v1.2.3 -> v1.2.4  2022/7/21
+        /// git hash
+        /// </summary>
+        //public static readonly Version V1_2_4 = new Version(1, 2, 4);
+
+        public static Version[] List { get; } = new Version[] {
+            V1_2_1,
+            V1_2_2,
+            V1_2_3,
+            //V1_2_4,
+        };
+
+        #endregion - 版本列表 Version List -
+    }
+}