[WIP] Refactor metadata

[cabrador]

Description

This PR refactors metadata for future splitting the utils package.

TODO:

• Split update command #135 is merged

Type of change

• Refactoring (changes that do NOT affect functionality)
• Adds or updates testing

[codecov]

Codecov Report

❌ Patch coverage is 71.74603% with 178 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
cmd/util-db/update/update.go	64.59%	39 Missing and 18 partials ⚠️
utils/metadata.go	84.03%	30 Missing and 12 partials ⚠️
utils/hash_provider.go	59.49%	22 Missing and 10 partials ⚠️
cmd/util-db/db/scrape.go	0.00%	16 Missing ⚠️
cmd/util-db/metadata/generate.go	41.66%	4 Missing and 3 partials ⚠️
cmd/util-db/clone/cloner.go	44.44%	3 Missing and 2 partials ⚠️
cmd/util-db/validate/validate.go	33.33%	3 Missing and 1 partial ⚠️
cmd/util-db/merge/merge.go	66.66%	2 Missing and 1 partial ⚠️
cmd/util-db/metadata/print.go	40.00%	2 Missing and 1 partial ⚠️
utils/config.go	75.00%	2 Missing and 1 partial ⚠️
... and 3 more

Files with missing lines	Coverage Δ
cmd/util-db/clone/db.go	83.33% <100.00%> (+0.98%)	⬆️
cmd/util-db/clone/patch.go	68.08% <100.00%> (+0.69%)	⬆️
cmd/util-db/generate/db_hash.go	52.00% <100.00%> (ø)
cmd/util-db/info/db_hash.go	69.23% <100.00%> (ø)
cmd/util-db/metadata/insert.go	67.96% <100.00%> (-0.31%)	⬇️
cmd/util-db/metadata/remove.go	75.00% <100.00%> (-5.00%)	⬇️
utildb/merger.go	57.00% <100.00%> (+0.39%)	⬆️
utils/test_utils.go	96.29% <100.00%> (ø)
utildb/utils.go	92.67% <95.23%> (+6.69%)	⬆️
utildb/validator.go	79.25% <50.00%> (+1.36%)	⬆️
... and 11 more

... and 15 files with indirect coverage changes

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