feat: Add request logger middleware

[fzavalia]

Log all incoming requests displaying:

• id: For tracing request and response
• state: State of the request, REQUEST for when the request is received, SUCCESS when there is a successful response, FAILURE for the contrary, UNHANDLED_FAILURE when the request fails without being handled correctly and UNKOWN where there is a response without status code (I have no clue when that could happen but better safe than sorry)
• code: Status code of the response
• time: Time taken between the start of the request and the response
• message: Currently used to display the error of >= 500 responses and UNHANDLED_FAILUREs

2021-11-18T17:03:13.083Z [INFO] (nft-server): http://localhost:5000/v1/nfts?foo=bar     {"id":1637254993083,"state":"REQUEST"}
2021-11-18T17:03:14.044Z [INFO] (nft-server): http://localhost:5000/v1/nfts?foo=bar     {"id":1637254993083,"state":"SUCCESS","code":200,"time":961}