updated App.vue to use new <script setup lang="ts"> syntax

yarn.lock

@@ -148,6 +148,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/luxon@npm:^2.3.1":
+  version: 2.3.1
+  resolution: "@types/luxon@npm:2.3.1"
+  checksum: e75928929aaf4e8796dcbdccd23a2dda029f637db01f5b06c7a72033ae106966df716e179ee41711280d782bd851228810643bce9bffc4ff62ae906e94ee1df2
+  languageName: node
+  linkType: hard
+
 "@types/node@npm:^16.11.26":
   version: 16.11.26
   resolution: "@types/node@npm:16.11.26"
@@ -890,6 +897,7 @@ __metadata:
   dependencies:
     "@popperjs/core": ^2.11.4
     "@rushstack/eslint-patch": ^1.1.1
+    "@types/luxon": ^2.3.1
     "@types/node": ^16.11.26
     "@vitejs/plugin-vue": ^2.2.4
     "@vue/eslint-config-prettier": ^7.0.0
@@ -915,7 +923,7 @@ __metadata:
     vue: ^3.2.31
     vue-matomo: ^4.1.0
     vue-router: ^4.0.14
-    vue-tsc: ^0.33.2-patch.1
+    vue-tsc: ^0.33.2
     vue3-cookies: ^1.0.6
     vuex: ^4.0.2
   languageName: unknown
@@ -3051,7 +3059,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"vue-tsc@npm:^0.33.2-patch.1":
+"vue-tsc@npm:^0.33.2":
   version: 0.33.2
   resolution: "vue-tsc@npm:0.33.2"
   dependencies: