fix: implement backoff retry policy for websocket handler

[satyajeetkolhapure]

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Web socket handler receives closed connection event more frequently than expected from infura server. So to make ganache more robust a backoff retry mechanism is implemented.

Retry configuration - 3 retries with 2 seconds initial retry and with exponential attempts followed.

When connection is closed, in flight requests are stored temporarily and processed once connection retry attempt succeeds.

Note: Once connection is successful, the retry counter is reset to initial counter.

[MicaiahReid]

Would it be possible to get tests added for this change?

[satyajeetkolhapure]

Would it be possible to get tests added for this change? Yes. I am going to add few tests to check InFlightRequests too.