Inventory service init

Summary

I want to merge this so you can try your services as well. The methods are not implemented yet. Will be in the follow-up. 👷🏽

Area

• inventory service (added Wine Service class with template for method to be implemented)
• parent project (changed spring stuff, so it will work hopefully ☘)

How to test?

1. mvn install
2. mvn spring-boot:run
3. You should be able to see Swagger UI on localhost:8080

Checklist before the merge

• Someone's approval
• Dev test (Have you run it? No regression made?)
• If there is something tricky, have you added comments?
• Format (currently optional)
• Run standing tests (currently optional)