Make the rocksdb cache optional in config and add policy for column opening

[AurelienFT]

Description

Cache is now an option and can be enable or disabled for each rocksdb instances.

A new rocksdb config has been added to choose between the mode that open columns on database in a lazy way (useful for tests) and the mode that open all columns at once at start (useful for production and benches). Benches now use the rocksdb-production feature of fuel-core.

In order to be more future-proof on the database configuration options, a DatabaseConfig structure has been created and is used across the code.

Breaking change

Before, if max-database-cache-size was unspecified then DEFAULT_DATABASE_CACHE_SIZE was used.
Now it make the cache disabled.

Checklist

• Breaking changes are clearly marked as such in the PR description and changelog
• New behavior is reflected in tests
• The specification matches the implemented behavior (link update PR if changes are needed)

Before requesting review

• I have reviewed the code myself
• I have created follow-up issues caused by this PR and linked them here

[xgreenx]

It looks like CI fails=)