feat(l1): add heed backend

[MegaRedHand]

Motivation

Description

Checklist

• Updated STORE_SCHEMA_VERSION (crates/storage/lib.rs) if the PR includes breaking changes to the Store requiring a re-sync.

Closes #issue_number

[github-actions]

Lines of code report

Total lines added: 203
Total lines removed: 0
Total lines changed: 203

Detailed view

+---------------------------------------+-------+------+
| File                                  | Lines | Diff |
+---------------------------------------+-------+------+
| ethrex/cmd/ethrex/initializers.rs     | 458   | +1   |
+---------------------------------------+-------+------+
| ethrex/crates/storage/backend/heed.rs | 192   | +192 |
+---------------------------------------+-------+------+
| ethrex/crates/storage/backend/mod.rs  | 4     | +1   |
+---------------------------------------+-------+------+
| ethrex/crates/storage/store.rs        | 2695  | +9   |
+---------------------------------------+-------+------+

[github-actions]

Benchmark for 45643a0

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Test	Base	PR	%
Trie/cita-trie insert 10k	28.5±0.73ms	29.6±1.32ms	+3.86%
Trie/cita-trie insert 1k	2.9±0.02ms	3.0±0.13ms	+3.45%
Trie/ethrex-trie insert 10k	24.4±0.65ms	25.7±0.74ms	+5.33%
Trie/ethrex-trie insert 1k	2.2±0.03ms	2.2±0.04ms	0.00%

[github-actions]

Benchmark for 9a37547

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Test	Base	PR	%
Trie/cita-trie insert 10k	32.9±3.16ms	27.2±3.12ms	-17.33%
Trie/cita-trie insert 1k	2.9±0.02ms	3.0±0.14ms	+3.45%
Trie/ethrex-trie insert 10k	26.4±1.38ms	29.5±1.56ms	+11.74%
Trie/ethrex-trie insert 1k	2.2±0.03ms	2.3±0.06ms	+4.55%

[github-actions]

Benchmark for 814b170

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Test	Base	PR	%
Trie/cita-trie insert 10k	31.9±4.04ms	29.9±2.25ms	-6.27%
Trie/cita-trie insert 1k	2.9±0.02ms	3.0±0.11ms	+3.45%
Trie/ethrex-trie insert 10k	25.1±1.15ms	24.8±0.87ms	-1.20%
Trie/ethrex-trie insert 1k	2.2±0.03ms	2.2±0.03ms	0.00%

[github-actions]

Benchmark for fa21ad7

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Test	Base	PR	%
Trie/cita-trie insert 10k	29.3±0.77ms	27.7±0.24ms	-5.46%
Trie/cita-trie insert 1k	2.9±0.02ms	2.9±0.09ms	0.00%
Trie/ethrex-trie insert 10k	25.0±0.67ms	24.0±0.47ms	-4.00%
Trie/ethrex-trie insert 1k	2.2±0.02ms	2.2±0.01ms	0.00%