Added cookie js script

js/cookie-consent.js

@@ -0,0 +1,26 @@
+function getCookies(){
+  var res = Cookies.get();
+  Shiny.setInputValue('cookies', res);
+}
+
+Shiny.addCustomMessageHandler('cookie-set', function(msg){
+  Cookies.set(msg.name, msg.value);
+  getCookies();
+})
+
+Shiny.addCustomMessageHandler('cookie-remove', function(msg){
+  Cookies.remove(msg.name);
+  getCookies();
+})
+
+$(document).on('shiny:connected', function(ev){
+  getCookies();
+})
+
+Shiny.addCustomMessageHandler('analytics-consent', function(msg){
+  gtag('consent', 'update', {
+    'analytics_storage': msg.value
+  });
+})
+
+