Rust

Move CosmWasm dependencies to new `cosmwasm` workspace #413

Job	Run time
clippy_all_features	37s
nightly_fmt	19s
clippy_no_default_features	31s
Check features	13m 15s
doc_all_features	1m 22s
doc_no_default_features	1m 28s
test-msrv (ubuntu-latest, unknown-linux-gnu)	2m 8s
test-stable	1m 31s
test-msrv (macos-latest, apple-darwin)	2m 32s
	23m 43s

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