Add QR code icon, button, modal for invites

Using https://excid3.github.io/tailwindcss-stimulus-components/

app/assets/stylesheets/application.tailwind.css

@@ -2,6 +2,7 @@
 @import "tailwindcss/components";
 @import "tailwindcss/utilities";
 
+@import "components/animations";
 @import "components/base";
 @import "components/buttons";
 @import "components/dashboard_services";