Improve lru read concurrency

[Neylix]

Description

Improve read concurrency on LRU cache. It now directly read the ets table instead of requesting it to the LRU GenServer. The GenServer is only used to manage the LRU workflow (monitor cache size, add value in ets table and remove old value when max size is reached).

Also move the ChainIndex LRU to be started in Embedded Supervisor instead of being linked to ChainIndex

Type of change

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

How Has This Been Tested?

Unit test + manual test on lot of datas

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