Store beacon aggregate after self-repair

[samuelmanzanera]

Description

Store beacon summaries aggregate after self-repair to maintain a better security and data availability.
Explorer changes have been made to make the requests faster with this new design.
The DB now allow storing aggregates and clear the summaries after self repair.

Fixes #565

Type of change

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

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

[Neylix]

An error is returned when script is called :
▸ Incomplete module/function/arity specification for --mfa!: "Mix.Tasks.Archethic.Migrate"
In the command you need to pass the function name "Mix.Tasks.Archethic.Migrate.run/1"