More tests

[ouziel-slama]

• Add load test with Locust: boostrap mainnet database, run the server with the flag --api-only and run Locust during 5 minutes. All urls are covered randomly except btcpay, cancel and destroy.
• Add heavy tests on mainnet (on develop only) and testnet4 (on all branches):
  • bootstrap
  • reparse 1000 blocks
  • rollback 3 checkpoints
  • catch up
• Refactor and clean all github workflow files
• Reset all caches after a rollback or a reparse
• Add --api-only flag
• Fix RSFetcher restart on failure
• Fix extended_tx_info param in API v1
• More tests...

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• Double-check the spelling and grammar of all strings, code comments, etc.
• Double-check that all code is deterministic that needs to be
• Add tests to cover any new or revised logic
• Ensure that the test suite passes
• Update the project release notes
• Update the project documentation, as appropriate, with a corresponding Pull Request in the Documentation repository

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