Add IsLoadBalancedRPC flag #478

Job	Run time
detect-modules	4s
golangci-lint (tools/evm-chain-bindings/examples/basic)	24s
golangci-lint (capabilities)	47s
golangci-lint (chains)	52s
golangci-lint (tools/evm-chain-bindings)	1m 25s
golangci-lint (metrics)	44s
golangci-lint (multinode)	55s
golangci-lint-result	3s
	5m 14s

Provide feedback