Rust

Move CosmWasm dependencies to new `cosmwasm` workspace #423

Job	Run time
Check features	9m 17s
clippy_all_features	29s
clippy_no_default_features	31s
doc_no_default_features	1m 22s
doc_all_features	1m 22s
nightly_fmt	16s
test-stable	1m 27s
test-msrv (ubuntu-latest, unknown-linux-gnu)	1m 56s
test-msrv (macos-latest, apple-darwin)	2m 25s
	19m 5s

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