feat: add signet-rpc-storage crate with ETH RPC endpoints #348

Job	Run time
rust-library-base / Feature Checks	1m 6s
rust-library-base / Base Checks / Clippy	46s
rust-library-base / Base Checks / Docs	38s
rust-library-base / Base Checks / doctest	1m 15s
rust-library-base / Base Checks / Rustfmt	20s
rust-library-base / Base Checks / Test Suite	2m 56s
	7m 1s

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