started workingon pinia, adding sample data

src/stores/employees.js

@@ -0,0 +1,12 @@
+import { defineStore } from 'pinia'
+
+import emplJSON from '../sample-data/employees.json'
+
+export const useEmployees = defineStore('employees', {
+    state: () => {
+        return { 
+            /** @type {{id: number, name: string, handle: string, contractHours: number }[]} */
+            employees: emplJSON
+        }
+    },
+})