perf(core): refactor mempool, add batch add/remove methods

[edg-l]

Motivation

• Put MempoolTransaction behind an Arc for cheaply cloning
• Reduce the time some locks are held for
• Add specialized functions for adding and removing multiple transactions at once. Doing so we avoid multiple requests to hold the lock.
• Some mempool code used a hashmap get and then remove function, when one can just use remove which returns the removed element, allowing to use it for further logic, simplifying the actual code.

[github-actions]

Lines of code report

Total lines added: 89
Total lines removed: 1
Total lines changed: 90

Detailed view

+-------------------------------------------------------+-------+------+
| File                                                  | Lines | Diff |
+-------------------------------------------------------+-------+------+
| ethrex/crates/blockchain/blockchain.rs                | 515   | +21  |
+-------------------------------------------------------+-------+------+
| ethrex/crates/blockchain/mempool.rs                   | 615   | +44  |
+-------------------------------------------------------+-------+------+
| ethrex/crates/blockchain/payload.rs                   | 555   | +7   |
+-------------------------------------------------------+-------+------+
| ethrex/crates/common/types/transaction.rs             | 2511  | +7   |
+-------------------------------------------------------+-------+------+
| ethrex/crates/networking/p2p/rlpx/connection.rs       | 541   | +6   |
+-------------------------------------------------------+-------+------+
| ethrex/crates/networking/p2p/rlpx/eth/transactions.rs | 312   | -1   |
+-------------------------------------------------------+-------+------+
| ethrex/crates/networking/rpc/clients/eth/mod.rs       | 996   | +3   |
+-------------------------------------------------------+-------+------+
| ethrex/crates/networking/rpc/engine/fork_choice.rs    | 394   | +1   |
+-------------------------------------------------------+-------+------+

[github-actions]

Benchmark Block Execution Results Comparison Against Main

Command	Mean [s]	Min [s]	Max [s]	Relative
base	253.190 ± 2.183	250.661	258.233	1.00 ± 0.02
head	253.184 ± 4.083	249.359	262.135	1.00