feat: disable backup lock for embedded massive insertion only gaining…

[lvca]

… around 30% improvement in speed

Tested LocalDatabaseBenchmark on my MacBook Pro 2019 and it's able to insert 4.3M rec/sec (multi-threads, 1 property only, 1 unique index). With default settings (backup enabled = true) the performance dropped to 3.2M rec/sec

Added new global cfg:

BACKUP_ENABLED("arcadedb.backup.enabled")

[codacy-production]

Coverage summary from Codacy

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Coverage variation	Diff coverage
✅ -0.68%	✅ 82.35%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (52e0757)	68094	43634	64.08%
Head commit (e5bd4d0)	68105 (+11)	43181 (-453)	63.40% (-0.68%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1852)	17	14	82.35%

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