Replace fasthttp to gin-gonic

[lcnascimento]

Context

Nowadays, our http lib abstraction is based on fasthttp implementation. Since its is covered by a tiny community (compared to other solutions), we are facing some limitations that slow us down. We fear that we might face other issues in the future.

Tasks

• [ ] Authentication Middleware
• [ ] Authorization Middleware
• [ ] Error Handling Middleware
• [ ] Cors Middleware
• [ ] Log Middleware
• [ ] Trace Middleware

Definition of Done

• [ ] It should keep its developer experience;
• [ ] All of the implemented middlewares should be translated to a gin-gonic context;

[arthurbailao]

We should cache JWKS using the following strategy: https://community.auth0.com/t/caching-jwks-signing-key/17654/2

[arthurbailao]

We also should test against audience and issuer: https://auth0.com/docs/quickstart/backend/golang/01-authorization