lint

feat: improve rpc namespace #1522

Job	Run time
clippy	4m 31s
fmt	15s
no_std (wasm, wasm32-unknown-unknown, scroll-engine,scroll-wire,rollup-node,scroll-network,rollup...	1m 43s
udeps	4m 31s
check-toml	6s
features	17m 15s
no_std (riscv, riscv32imac-unknown-none-elf, scroll-engine,scroll-wire,rollup-node,scroll-network...	1m 23s
codespell	12s
zepter	3m 11s
docs	4m 26s
	37m 33s

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