Configurable timeout period for GrpcServicesError in NodeChannel

[Ivo-Yankov]

Problem

Currently the timeout in NodeChannel._createUnaryClient is hardcoded to 10_000 ms. This period may not be enough in all cases - for example when using Hedera Local different machines or OSs may run the consensus nodes at different speeds and some are considerably slower than others. This can cause an unintended limitation on which contract methods can be executed through the SDK.

Solution

Add an option to configure the timeout period.

Alternatives

No response