show add transaction button in desktop navigation bar (#59)

src/stores/desktopPage.ts

@@ -0,0 +1,22 @@
+import { ref } from 'vue';
+import { defineStore } from 'pinia';
+
+export const useDesktopPageStore = defineStore('desktopPages', () => {
+    const showAddTransactionDialogInTransactionList = ref<boolean>(false);
+
+    function setShowAddTransactionDialogInTransactionList(): void {
+        showAddTransactionDialogInTransactionList.value = true;
+    }
+
+    function resetShowAddTransactionDialogInTransactionList(): void {
+        showAddTransactionDialogInTransactionList.value = false;
+    }
+
+    return {
+        // states
+        showAddTransactionDialogInTransactionList,
+        // functions
+        setShowAddTransactionDialogInTransactionList,
+        resetShowAddTransactionDialogInTransactionList
+    }
+});