Smart Contracts playbooks rework

[bchamagne]

Description

Freshen up the smart contract playbooks.
They are easier to write, easier to read and the logs are easier on the eyes.
Add 3 new test contracts:

1. Faucet
2. Counter
3. UCO All-Time High

Depends on #995 (Json.parse function)
Fixes #929

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Start a local node and then run mix archethic.regression --playbook localhost.

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]

I'm going to remove all the fixes from this PR and open a PR for each fix. Because we want the fixes in 1.0.8 and this PR require more work to be complete

[bchamagne]

Depends on #1124. It cannot work without it.