Add core project files

utils/fileHandler.js

@@ -0,0 +1,15 @@
+const fs = require('fs').promises;
+const path = require('path');
+
+const dataPath = path.join(__dirname, '../data/applications.json');
+
+const readApplications = async () => {
+  const data = await fs.readFile(dataPath, 'utf-8');
+  return JSON.parse(data);
+};
+
+const writeApplications = async (data) => {
+  await fs.writeFile(dataPath, JSON.stringify(data, null, 2), 'utf-8');
+};
+
+module.exports = { readApplications, writeApplications };