chore: 首次簽入 Thinkyu ASP.NET 專案

- 加入 Visual Studio / ASP.NET .gitignore
- 排除建置輸出、IDE 設定、NuGet packages、大型 MSI 安裝檔

教育訓練系統/Web/Forms/Common/ShowLargePicture.aspx

@@ -0,0 +1,14 @@
+<%@ Page Title="" Language="C#" MasterPageFile="~/PopupForm2.Master" AutoEventWireup="true" CodeBehind="ShowLargePicture.aspx.cs" Inherits="Education.Forms.Common.ShowLargePicture" %>
+
+<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
+</asp:Content>
+<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
+  <div style="margin: auto; text-align: center; vertical-align: middle;">
+    <asp:Image ID="Image1" runat="server" />
+  </div>
+  <script type="text/javascript">
+    window.onload = function () {
+      window.resizeTo(screen.width, screen.height);
+    };
+  </script>
+</asp:Content>