Add Crypto.decrypt_with_storage_nonce/1 in Interpreter's library

[samuelmanzanera]

Description

Add Crypto.decrypt_with_storage_nonce/1 in the Interpreter's library.

This feature allows node to decrypt secrets during the contract's execution.

Type of change

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

How Has This Been Tested?

• Unit tests
• Integration test with the following code:

  @version 1
  actions triggered_by: interval, at: "* * * * * *" do
    cleartext = Crypto.decrypt_with_storage_nonce(0x...)
    Contract.set_content(cleartext)
  end

The ciphertext is generated using the Crypto.ec_encrypt("data to encrypt", Crypto.storage_nonce_public_key())

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