Introduce `RpcParams` in sc-cli #419

Job	Run time
set-image	9s
test-frame-ui	31m 22s
test-full-crypto-feature	2m 24s
cargo-check-benches (master)	25m 1s
test-node-metrics	11m 5s
cargo-check-benches (current)	29m 55s
cargo-check-each-crate (1)	19m 39s
cargo-check-each-crate (2)	20m 21s
cargo-check-each-crate (3)	4m 43s
cargo-check-each-crate (4)	16m 56s
cargo-check-each-crate (5)	23m 10s
cargo-check-each-crate (6)	14m 0s
cargo-check-each-crate (7)	27m 22s
test-frame-examples-compile-to-wasm	2m 54s
test-deterministic-wasm	6m 30s
check-tracing	2m 6s
check-metadata-hash	5m 57s
cargo-hfuzz	8m 1s
node-bench-regression-guard	18s
All test misc tests passed	1s
	4h 11m 54s

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