[#695] Hangzhou on-chain views

Description

Add on-chain views.

Resources:

• Overview
• Main MR in Tezos
• TZIP spec

There is also a bunch of follow-up issues that assume some refactorings or adding a functionality that didn't fit into this MR.

There were some concerns about the views implementation in Tezos, they are kept in #704.

• Make sure there are no leftover todos.

And minor nitpicks to myself:

• Rename vParameter field to vArgument?
• Do not return pair in createContractE, rather put Address on stack?

Related issue(s)

Resolves #695 (closed)

✅ Checklist for your Merge Request

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