Rust

Move CosmWasm dependencies to new `cosmwasm` workspace #427

Job	Run time
clippy_no_default_features	27s
Check features	12m 56s
clippy_all_features	29s
doc_all_features	1m 26s
doc_no_default_features	1m 24s
nightly_fmt	15s
test-msrv (ubuntu-latest, unknown-linux-gnu)	1m 53s
test-stable	1m 16s
test-msrv (macos-latest, apple-darwin)	1m 52s
	21m 58s

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