Feature/transaction data
Checklist:
- config db kayak user, pass gua pindahin ke satu file sendiri supaya setiap push gak perlu ganti-ganti terus (harusnya pake file env sih wkwkwk)
- Bisa balikin data transaksi (layanan 3, tested di postman)
- Gua nambahin modul nodemon, nanti kalo mau jalanin server tinggal "nodemon index.js" aja biar kalo file diedit langsung auto ke update servernya