拆分 FreeSql 按需引用

Providers/FreeSql.Provider.MySql/MySqlExtensions.cs

@@ -0,0 +1,11 @@
+public static partial class FreeSqlGlobalExtensions {
+
+	/// <summary>
+	/// 特殊处理类似 string.Format 的使用方法，防止注入，以及 IS NULL 转换
+	/// </summary>
+	/// <param name="that"></param>
+	/// <param name="args"></param>
+	/// <returns></returns>
+	public static string FormatMySql(this string that, params object[] args) => _mysqlAdo.Addslashes(that, args);
+	static FreeSql.MySql.MySqlAdo _mysqlAdo = new FreeSql.MySql.MySqlAdo();
+}