Allow to access to a language directly though instance.tld/:lang

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/components/Utils/HomepageRedirectComponent.vue

@@ -0,0 +1,15 @@
+<template>
+  <div>a</div>
+</template>
+
+<script lang="ts">
+import { Component, Vue } from "vue-property-decorator";
+import RouteName from "@/router/name";
+
+@Component
+export default class HomepageRedirectComponent extends Vue {
+  created(): void {
+    this.$router.replace({ name: RouteName.HOME });
+  }
+}
+</script>