feat: migrate to vue 3 (#2689)

---------

Co-authored-by: Joep <jcbuhre@gmail.com>
Co-authored-by: Omar Hussein <omarmohammad1951@gmail.com>
Co-authored-by: Oleg Lobanov <oleg@lobanov.me>

frontend/src/stores/clipboard.ts

@@ -0,0 +1,24 @@
+import { defineStore } from "pinia";
+
+export const useClipboardStore = defineStore("clipboard", {
+  // convert to a function
+  state: (): {
+    key: string;
+    items: ClipItem[];
+    path?: string;
+  } => ({
+    key: "",
+    items: [],
+    path: undefined,
+  }),
+  getters: {
+    // user and jwt getter removed, no longer needed
+  },
+  actions: {
+    // no context as first argument, use `this` instead
+    // easily reset state using `$reset`
+    resetClipboard() {
+      this.$reset();
+    },
+  },
+});