feat: implement saving execution position + era_manager + gas used validation

[KolbyML]

What was wrong?

• when we stopped or trin-execution crashed we would need to restart from 0
• If a download of a era file failed, it would just panic instead of retrying getting the era file
• we didn't verify gas used, which means we could commit invalid data to the database, which means we would corrupt our database on invalid state execution
• we were running trin-execution from a test which wasn't sustainable

  How was it fixed?

• I implemented ExecutionPosition which saves our position on every commitment, and is used to initial where to start on starting trin-execution
• I implemented EraManager a "Smart" object which will fetch us any block we request by number, it also has log_2 sleep retries which is very nice.
• Normally gas used verification is done at the end of block execution, but because we execute from era1 files which contain receipts. We can use the receipts which contain the incremental cumulative_gas_used to verify exactly which transaction failed executing so our database doesn't get corrupted with bad data
• I made trin-execution so it could be ran as a standalone application, this will allow us to better build out trin-execution, as running it from a test was just not cutting it anymore.

I am so hyped about this PR because now I can focus on fixing bugs, instead of waiting forever to resync every time

[KolbyML]

@morph-dev ready for another look, let me know as always if I missed anything

[KolbyML]

@morph-dev ready for another look. I say this every time but if I missed something don't be afraid to let me know