[#696] Add timelock puzzle support

Description

This adds the necessary cryptographic primitives for timelock puzzle support, as well as OPEN_CHEST instruction to the Morley interpreter, openChest command to Lorentz, and chest/key generators to both morley CLI and cleveland.

I've also had to update the primitives list to hangzhou revision, and I also bumped CI to use hangzhou, because otherwise timelock-specific tests will fail on CI.

Please note: this MR is against master, but we may want to consider creating a separate branch for hangzhou until it is live. IMO, it doesn't matter that much for the purpose of review though.

Related issue(s)

Resolves #696 (closed)

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