Rust

Move CosmWasm dependencies to new `cosmwasm` workspace #421

Job	Run time
clippy_no_default_features	32s
Check features	13m 41s
doc_all_features	1m 38s
clippy_all_features	40s
doc_no_default_features	1m 17s
nightly_fmt	16s
test-msrv (ubuntu-latest, unknown-linux-gnu)	1m 52s
test-stable	1m 11s
test-msrv (macos-latest, apple-darwin)	2m 12s
	23m 19s

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