make config class and separate migrations script

server/utils/loadAppVersion.ts

@@ -0,0 +1,16 @@
+import path from "path";
+import { __DIRNAME } from "@server/consts";
+import fs from "fs";
+
+export function loadAppVersion() {
+    const packageJsonPath = path.join(__DIRNAME, "..", "package.json");
+    let packageJson: any;
+    if (fs.existsSync && fs.existsSync(packageJsonPath)) {
+        const packageJsonContent = fs.readFileSync(packageJsonPath, "utf8");
+        packageJson = JSON.parse(packageJsonContent);
+
+        if (packageJson.version) {
+            return packageJson.version;
+        }
+    }
+}