Add/era export import test

[brbrr]

Adds an import/export era test.

The test expects a node with FastSync/SnapSync flags enabled and AncientBarriers set to 0 (mostly for sepolia usecase defaults are bumped to post-merge)

The flow is quite simple:

• Check the node config is as expected
• Wait for node to sync
• Update config with Export flags and restart the node
• Wait for node to finish export
• Remove db and update config with Import flags and restart the node
• Wait for node to finish import
• Verify that eth_getBlockByNumber for mergeBlock / 2 is the same

[Copilot]

Pull Request Overview

This PR introduces an end-to-end test for the era export/import functionality and updates the NodeInfo helper to accommodate a new network type as well as refine the conversion logic for merge block numbers.

• Adds a comprehensive test (ExportImportTest) for era export and import, including log verifications and Docker container management.
• Introduces a new network type "Hoodi" and updates the conversion method in GetNetworkType.

Reviewed Changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated 3 comments.

File	Description
NethermindNode.Tests/Tests/HistoryExpiry/EraTests.cs	New integration test for era export/import functionality
NethermindNode.Core/Helpers/NodeInfo.cs	Updates to network type conversion and inclusion of a new network type

Files not reviewed (2)

• NethermindNode.Tests/NethermindNode.Tests.csproj: Language not supported
• nethermind: Language not supported

[brbrr]

For the sake of speed - I decided to use relatively small number. probably we could update it to be more realistic