Add usage of qrcode.js

- Display qrcode in Privacy page

WretchedMachines/Pages/Privacy.cshtml

@@ -7,6 +7,7 @@
 
 <p>Use this page to detail your site's privacy policy.</p>
 <div>
+    <div id="qrcode"></div>
     <ul>
     @foreach(var item in Model.Items)
     {

WretchedMachines/Pages/Shared/_Layout.cshtml

@@ -48,6 +48,7 @@
 
     <script src="~/lib/jquery/dist/jquery.min.js"></script>
     <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
+    <script src="~/lib/qrcodejs/qrcode.min.js"></script>
     <script src="~/js/site.js" asp-append-version="true"></script>
 
     @await RenderSectionAsync("Scripts", required: false)

WretchedMachines/wwwroot/js/site.js

@@ -2,3 +2,7 @@
 // for details on configuring this project to bundle and minify static web assets.
 
 // Write your JavaScript code.
+
+$(function(){
+    new QRCode(document.getElementById("qrcode"), "https://plugarii.com");
+});