perf(l1)!: enable BlobDB for account bytecodes

[MegaRedHand]

Motivation

Description

This PR changes the account_codes CF to use RocksDB BlobDB functionality, which moves values outside from the tree, to independent files. We expect this to increase the read performance, since bytecodes can have vastly different sizes, and some occupy multiple page lines.

[github-actions]

Lines of code report

Total lines added: 11
Total lines removed: 0
Total lines changed: 11

Detailed view

+-------------------------------------------+-------+------+
| File                                      | Lines | Diff |
+-------------------------------------------+-------+------+
| ethrex/crates/storage/store_db/rocksdb.rs | 1648  | +11  |
+-------------------------------------------+-------+------+

[github-actions]

Benchmark Block Execution Results Comparison Against Main

Command	Mean [s]	Min [s]	Max [s]	Relative
base	59.733 ± 0.383	59.174	60.616	1.00 ± 0.01
head	59.680 ± 0.308	59.311	60.096	1.00

[Copilot]

Pull Request Overview

This PR enables RocksDB BlobDB functionality for the account_codes column family to improve read performance by storing bytecodes in separate blob files rather than in the LSM tree. This is particularly beneficial for bytecodes of varying sizes.

• Enables BlobDB for account_codes CF with Lz4 compression
• Sets minimum blob size to 32 bytes to keep small bytecodes inline
• Adds lz4 feature to rocksdb dependency

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
crates/storage/store_db/rocksdb.rs	Separates CF_ACCOUNT_CODES configuration from CF_RECEIPTS and enables BlobDB with Lz4 compression and 32-byte minimum blob size
Cargo.toml	Adds lz4 feature to rocksdb dependency to support blob compression
Cargo.lock	Adds lz4-sys dependency required by rocksdb lz4 feature
CHANGELOG.md	Documents the BlobDB feature addition for account_codes column family

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[Oppen]

Good call.

[Oppen]

LGTM. I'll try it in ethrex-sync-3 as a smoke test. If it syncs and runs Hoodi OK for while it's green on my side.