Feat/assertor testing

[tosettil-polimi]

Add Kurtosis Assertoor Testing Infrastructure

Overview

This PR introduces automated testing infrastructure using Kurtosis Assertoor for validating Erigon's functionality and compatibility. The implementation includes configuration for both standard and Pectra-specific test scenarios.

Changes

• Added GitHub Actions workflow for Kurtosis Assertoor testing
• Created two configuration files (first one imported from main branch):
  • Standard testing configuration (config.properties)
  • Pectra-specific testing configuration (config-pectra.properties)
• Implemented Docker build and test pipeline

Implementation Details

• Test workflow triggers on:
  • Pushes to release/2.61 branch
  • Manual workflow dispatch
• Configures test matrix with multiple clients:
  • Execution Layer: Geth, Erigon, Nethermind
  • Consensus Layer: Lighthouse, Nimbus
• Includes artifact retention for test logs and outputs

[tosettil-polimi]

Here the new version after closing #12662.