#4063: Enable storage.debug flag to enable go-leia performance logging

[reinkrul]

Fixes #4063 for v5.4

TODO:

• Update to released version of go-leia

Later:

• Port to master branch

[qltysh]

Coverage Impact

⬇️ Merging this pull request will decrease total coverage on V5.4 by 0.06%.

Modified Files with Diff Coverage (5)

Rating	File	% Diff	Uncovered Line #s
	vcr/vcr.go	100.0%
	storage/engine.go	50.0%	42-44, 123-141
	vcr/issuer/leia_store.go	100.0%
	storage/cmd/cmd.go	0.0%	42
	vcr/verifier/leia_store.go	100.0%
	Total	52.6%

🤖 Increase coverage with AI coding...

In the `iss4063-leia-index-stats` branch, add test coverage for this new code:

- `storage/cmd/cmd.go` -- Line 42
- `storage/engine.go` -- Lines 42-44 and 123-141

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• Diff Coverage: Coverage for added or modified lines of code (excludes deleted files). Learn more.

• Total Coverage: Coverage for the whole repository, calculated as the sum of all File Coverage. Learn more.

• File Coverage: Covered Lines divided by Covered Lines plus Missed Lines. (Excludes non-executable lines including blank lines and comments.)

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[stevenvegt]

Thinks to look at:

• encapsulate the creation of the leia store in a function which always automagically adds the callback depending on the config
• Use the latest 0.8.0 version of json-gold