New toast plugin, replacing ui/TextToast.vue.

Globally register toast plugin allows us to call this.$toast.info({})
from anywhere for a toast.
Currently styled types:
 - error
 - info

frontend/vinlottis-init.js

@@ -3,11 +3,16 @@ import VueRouter from "vue-router";
 import { routes } from "@/router.js";
 import Vinlottis from "@/Vinlottis";
 
+import Toast from "@/plugins/Toast";
+
 import * as Sentry from "@sentry/browser";
 import { Vue as VueIntegration } from "@sentry/integrations";
 
 Vue.use(VueRouter);
 
+// Plugins
+Vue.use(Toast);
+
 const ENV = window.location.href.includes("localhost") ? "development" : "production";
 if (ENV !== "development") {
   Sentry.init({