feat(l1): measure & speed up healing during snap sync

[fmoletta]

Based on #2447 (It relies on the async trie write methods added by it)
Motivation
This PR aims to measure and improve the healing stage of snap sync.
Measuring: Measures the time taken to heal 100 state/storage nodes
Improvements: Write nodes asynchronously + Commit storage nodes from different tries at once. Observed improvements in hoodi testnet amounted to halved healing times in both state and storage healing

Description

• Use async methods to store nodes obtained from peers during healing phase
• Store nodes from different tries in a single operation for storage nodes
• Measure and show healing speed (in ms/100nodes)
• Fix: also fetch pivot block body before executing post-pivot blocks (as validation now requires parent body to be present)

Closes #issue_number

[github-actions]

Lines of code report

Total lines added: 50
Total lines removed: 0
Total lines changed: 50

Detailed view

+------------------------------------------------------+-------+------+
| File                                                 | Lines | Diff |
+------------------------------------------------------+-------+------+
| ethrex/crates/networking/p2p/sync/state_healing.rs   | 153   | +20  |
+------------------------------------------------------+-------+------+
| ethrex/crates/networking/p2p/sync/storage_healing.rs | 130   | +15  |
+------------------------------------------------------+-------+------+
| ethrex/crates/storage/trie_db/libmdbx_dupsort.rs     | 93    | +15  |
+------------------------------------------------------+-------+------+