chore(zb-db): introduce RocksDBConfig and made statistics optional

[Zelldon]

Description

• Introduce the RocksDbConfiguration class which can be used with the ZeebeDbFactory.
• Made Statistics optional
• Remove unused Enum class object

Related issues

closes #6157

Definition of Done

Not all items need to be done depending on the issue and the pull request.

Code changes:

• The changes are backwards compatibility with previous versions
• If it fixes a bug then PRs are created to backport the fix to the last two minor versions. You can trigger a backport by assigning labels (e.g. backport stable/0.25) to the PR, in case that fails you need to create backports manually.

Testing:

• There are unit/integration tests that verify all acceptance criterias of the issue
• New tests are written to ensure backwards compatibility with further versions
• The behavior is tested manually
• The change has been verified by a QA run
• The impact of the changes is verified by a benchmark

Documentation:

• The documentation is updated (e.g. BPMN reference, configuration, examples, get-started guides, etc.)
• New content is added to the release announcement

[npepinpe]

👍

This means the ColumnFamilyType of the ZeebeDbFactory is now inferred via return type? But then the DB it produces will have the right type. I don't see any downsides, I guess - I'm still thinking if we should keep the enums in general, but we can debate that later.

[npepinpe]

this should also be set only if statistics is enabled, or?

[Zelldon]

ah makes probably sense 👍

[Zelldon]

This means the ColumnFamilyType of the ZeebeDbFactory is now inferred via return type? But then the DB it produces will have the right type. I don't see any downsides, I guess - I'm still thinking if we should keep the enums in general, but we can debate that later.

You can create an follow up issue if you see a need. I think it makes it harder to use, if we not have the enum especially how will you differentiate between the different types to make sure that you are not iterating over variables and messages when searching for a job etc.

[Zelldon]

@npepinpe I updated the PR please have a look

[npepinpe]

Looks good!

[Zelldon]

Thanks @npepinpe and now get some rest :)

[Zelldon]

bors r+

[ghost]

Build succeeded:

• continuous-integration/jenkins/branch