feat: added Radzen layout

WotBlitzStatisticsPro.Blazor/wwwroot/css/app.css

@@ -1,35 +1,7 @@
-@import url('open-iconic/font/css/open-iconic-bootstrap.min.css');
-
-html, body {
+html, body {
     font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
 }
 
-a, .btn-link {
-    color: #0366d6;
-}
-
-.btn-primary {
-    color: #fff;
-    background-color: #1b6ec2;
-    border-color: #1861ac;
-}
-
-.content {
-    padding-top: 1.1rem;
-}
-
-.valid.modified:not([type=checkbox]) {
-    outline: 1px solid #26b050;
-}
-
-.invalid {
-    outline: 1px solid red;
-}
-
-.validation-message {
-    color: red;
-}
-
 #blazor-error-ui {
     background: lightyellow;
     bottom: 0;