fix(sdk): retry network client creation failures

[mattstam]

Fixes this error that can occur during client creation:

thread 'tokio-runtime-worker' panicked at script/src/main.rs:309:77:
failed to generate compressed proof: transport error
Caused by:
0: dns error: failed to lookup address information: nodename nor servname provided, or not known
1: dns error: failed to lookup address information: nodename nor servname provided, or not known
2: failed to lookup address information: nodename nor servname provided, or not known
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
Error: JoinError::Panic(Id(52), "failed to generate compressed proof: transport error\n\nCaused by:\n 0: dns error: failed to lookup address information: nodename nor servname provided, or not known\n 1: dns error: failed to lookup address information: nodename nor servname provided, or not known\n 2: failed to lookup address information: nodename nor servname provided, or not known", ...)

We just need to add retrying to client creation / connection.