Feat: implement era switch in e2e tests

[jpraynaud]

Content

This pull request introduces several changes to the mithril-test-lab to support era switching and re-genesis processes. Key changes include updates to the CI workflow, enhancements to various scripts, and modifications to the end-to-end tests to handle new era transitions.

CI Workflow Enhancements:

• Added next_era parameter to the matrix in .github/workflows/ci.yml to support testing era switches.
• Included tests for era switch without regenesis and era switch with regenesis in .github/workflows/ci.yml.
• Updated the command to include --mithril-next-era in .github/workflows/ci.yml.

Mithril Test Lab Enhancements:

• Modified mkfiles-mithril-era.sh to compute and use the submitted transaction ID and handle UTxOs with and without inline datums. [1] [2] [3]
• Updated exec.rs to include era_epoch in the register_era_marker function and improved logging. [1] [2]
• Enhanced end_to_end_spec.rs to verify artifact production and handle era switches with optional regenesis. [1] [2] [3]
• Added new command line arguments in main.rs to support mithril_next_era and mithril_era_regenesis_on_switch. [1] [2]
• Updated aggregator.rs to handle era epochs and generate transaction data accordingly. [1] [2] [3]
• Enhanced infrastructure.rs to manage era switches, including startup era registration and directory management per era. [1] [2] [3] [4] [5] [6] [7]

Pre-submit checklist

• Branch
  • Tests are provided (if possible)
  • Crates versions are updated (if relevant)
  • CHANGELOG file is updated (if relevant)
  • Commit sequence broadly makes sense
  • Key commits have useful messages
• PR
  • No clippy warnings in the CI
  • Self-reviewed the diff
  • Useful pull request description
  • Reviewer requested

Issue(s)

Relates to #1946

[github-actions]

Test Results

    4 files  ±0     54 suites  ±0   9m 29s ⏱️ +3s
1 338 tests ±0  1 338 ✅ ±0  0 💤 ±0  0 ❌ ±0 
1 546 runs  ±0  1 546 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit d3fe03f. ± Comparison against base commit 6849c3a.

♻️ This comment has been updated with latest results.

[dlachaume]

LGTM 👍

[sfauvel]

LGTM

[Alenar]

LGTM, I left a few comments and suggestions.