feat: remove `std` usage by `indexmap` (#179) #115

Job	Run time
lint-and-test / Test Suite	16m 1s
lint-and-test / Clippy	4m 13s
lint-and-test / Format	18s
lint-and-test / Check Package	4m 52s
lint-and-test / Foundry project	6s
lint-and-test / solhint	9s
lint-and-test / Unused Dependencies	6m 45s
Release	2m 53s
	35m 17s

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