buy-refund interactions

Created by: oblivisheee

This pull request includes significant changes to the subscription service, updates to the nginx and redis configurations, and modifications in the docker-compose.yaml file to improve network configuration and service management. The most important changes include adding new endpoints for buying and refunding subscriptions, enhancing error handling, and updating network configurations for better service isolation.

Subscription Service Enhancements:

• Added new endpoints for buying and refunding subscriptions in subscription/src/interfaces.rs. ([[1]](diffhunk://#diff-56fcd6811a85bff329f8169cc3c85e50e1ba88be26f35efa5e10c4c329be45f5R291-R404), [[2]](diffhunk://#diff-56fcd6811a85bff329f8169cc3c85e50e1ba88be26f35efa5e10c4c329be45f5L291-L295))
• Introduced new error type UserDoesntHaveSubscription in subscription/src/errors.rs and updated error handling logic. ([[1]](diffhunk://#diff-acba79727c688e36908e78a576172a64138e7ffe4516718c354ebae2a33d85d4R97-R98), [[2]](diffhunk://#diff-acba79727c688e36908e78a576172a64138e7ffe4516718c354ebae2a33d85d4R127), [[3]](diffhunk://#diff-acba79727c688e36908e78a576172a64138e7ffe4516718c354ebae2a33d85d4R439-R450), [[4]](diffhunk://#diff-acba79727c688e36908e78a576172a64138e7ffe4516718c354ebae2a33d85d4R487))
• Updated subscription/src/main.rs to register new endpoints and set up NATS communication client. ([[1]](diffhunk://#diff-776f6ae2e7025b4ef6540ea041eb12015c41a356c6ac0e0aa283e8db1d5855abR113-R114), [[2]](diffhunk://#diff-776f6ae2e7025b4ef6540ea041eb12015c41a356c6ac0e0aa283e8db1d5855abR123), [[3]](diffhunk://#diff-776f6ae2e7025b4ef6540ea041eb12015c41a356c6ac0e0aa283e8db1d5855abR134-R135))
• Added buy_refund module in subscription/src/reqres.rs to handle request and response structures for new endpoints. ([subscription/src/reqres.rsR102-R139](diffhunk://#diff-cea359b9459d037961cc8f38f9d62bee71ad8f411893a8d8236622ca2b43a9e7R102-R139))

Configuration Updates:

• Added new locations for subscription-related endpoints in conf/nginx.conf. ([conf/nginx.confR69-R84](diffhunk://#diff-8e371ad49c2a106a2f6b14d3cb01445c4f7d5c3694f50892d95932b48f42671cR69-R84))
• Updated conf/redis.conf to include comprehensive configuration settings for Redis. ([[1]](diffhunk://#diff-e336eed03fce57868891146755dc255fdc85fcf98ddc055291113b202ce66023R1-R107), [[2]](diffhunk://#diff-e336eed03fce57868891146755dc255fdc85fcf98ddc055291113b202ce66023R116-R120))

Docker Compose Modifications:

• Modified network configurations in docker-compose.yaml to create separate networks for db and logs, improving service isolation. ([[1]](diffhunk://#diff-3fde9d1a396e140fefc7676e1bd237d67b6864552b6f45af1ebcc27bcd0bb6e9L36-R37), [[2]](diffhunk://#diff-3fde9d1a396e140fefc7676e1bd237d67b6864552b6f45af1ebcc27bcd0bb6e9L63-R65), [[3]](diffhunk://#diff-3fde9d1a396e140fefc7676e1bd237d67b6864552b6f45af1ebcc27bcd0bb6e9L79-R85), [[4]](diffhunk://#diff-3fde9d1a396e140fefc7676e1bd237d67b6864552b6f45af1ebcc27bcd0bb6e9L95-R99), [[5]](diffhunk://#diff-3fde9d1a396e140fefc7676e1bd237d67b6864552b6f45af1ebcc27bcd0bb6e9L108-R109), [[6]](diffhunk://#diff-3fde9d1a396e140fefc7676e1bd237d67b6864552b6f45af1ebcc27bcd0bb6e9L119-R119), [[7]](diffhunk://#diff-3fde9d1a396e140fefc7676e1bd237d67b6864552b6f45af1ebcc27bcd0bb6e9L153-R153), [[8]](diffhunk://#diff-3fde9d1a396e140fefc7676e1bd237d67b6864552b6f45af1ebcc27bcd0bb6e9L198-R201))