gRPC timeout blocked context

[HarleyAppleChoi]

Bug description

The chain may not respond when the resource is not ready. If you don't set a timeout to context, the context would possibly block forever.
Therefore, the parsing stops.

Steps to reproduce

Parse the latest block with only parse missing block option.

Expected behavior

The system should retry when there is a timeout.

Implementation Proposal

At https://github.com/forbole/juno/blob/3b5d944a0def1b47ae695422748c63d263833779/node/remote/node.go
It should set Exponential backoff for timeout and use a new context every time when the chain node grpc endpoint is called
Example:

ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
transaction, err := cp.flowClient.GetTransaction(ctx, txID)
cancel()