feat(jans-cedarling): Make SparKV use generics, and update MemoryLogger to use those.

[djellemah]

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Depends on #10013

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Description

Target issue

#10554

closes #10554

Implementation Details

Make SparKV use a generic to specify the type to be stored.

Update MemoryLogger to make use of SparKV with generics.

Provide a drain iterator for a fast implementation of MemoryLogger::pop_logs.

Update LogStorage and LogWriter to use serde_json::Value internally.

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Test and Document the changes

• Static code analysis has been run locally and issues have been fixed
• Relevant unit and integration tests have been added/updated
• Relevant documentation has been updated if any (i.e. user guides, installation and configuration guides, technical design docs etc)

Please check the below before submitting your PR. The PR will not be merged if there are no commits that start with docs: to indicate documentation changes or if the below checklist is not selected.

• I confirm that there is no impact on the docs due to the code changes in this PR.

[nynymike]

Cool!

[olehbozhok]

I would like you to use cargo fmt formatter

cargo fmt -p sparkv

[djellemah]

I would like you to use cargo fmt formatter

cargo fmt -p sparkv

cargo fmt changes in #927ffc #5cad82

[olehbozhok]

I think fallback logger no need initialize every time. But in current context it doesn't really matter.