transform core api codes into this project, update modules as admin/pos context modules

src/common/utils/password.util.ts

@@ -0,0 +1,11 @@
+import * as bcrypt from 'bcrypt'
+
+export class PasswordUtil {
+  static async hash(password: string, saltRounds = 10): Promise<string> {
+    return bcrypt.hash(password, saltRounds)
+  }
+
+  static async compare(password: string, hashedPassword: string): Promise<boolean> {
+    return bcrypt.compare(password, hashedPassword)
+  }
+}