chore: 使模板支持正则

Admin.NET/Admin.NET.Core/Service/CodeGen/SysCodeGenService.cs

@@ -376,6 +376,8 @@ public class SysCodeGenService : IDynamicApiController, ITransient
             {
                 builder.AddAssemblyReferenceByName("System.Linq");
                 builder.AddAssemblyReferenceByName("System.Collections");
+                builder.AddAssemblyReferenceByName("System.Text.RegularExpressions");
+                builder.AddUsing("System.Text.RegularExpressions");
                 builder.AddUsing("System.Collections.Generic");
                 builder.AddUsing("System.Linq");
             });
@@ -443,6 +445,8 @@ public class SysCodeGenService : IDynamicApiController, ITransient
             {
                 builder.AddAssemblyReferenceByName("System.Linq");
                 builder.AddAssemblyReferenceByName("System.Collections");
+                builder.AddAssemblyReferenceByName("System.Text.RegularExpressions");
+                builder.AddUsing("System.Text.RegularExpressions");
                 builder.AddUsing("System.Collections.Generic");
                 builder.AddUsing("System.Linq");
             });