Smart Contracts: Crypto.encrypt/2 & Crypto.encrypt_with_storage_nonce/1

[bchamagne]

Description

Adds 2 new functions to the language
Based on PR #1528 (only look at the 3 last commits)
Fixes #1525

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Unit tests

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[bchamagne]

• missing process.put in the worker/contract workflow

[bchamagne]

will not do because a new interpreter is on the way