Stateless: Implement stateless execution of blocks

[bhartnett]

This adds a new statelessProcessBlock function which executes a block in memory by using the execution witness to populate an in memory database. The aristo putSubtrie function is used load the subtrie of trie nodes into the database before executing the block. The witness is validated for correctness before starting the execution. After executing the block the stateroot is compared to the stateroot in the header of the current block.

In order to verify the correctness of the generated execution witnesses, stateless execution can be enabled at runtime by setting the --stateless-witness-validation=true flag (note that this flag depends on the --stateless-provider=true being set as well).

[advaita-saha]

If you want the stateless tests in the CI you can add it as a make file target
and include it in the eest_full_test

[advaita-saha]

We are not using stable anymore
For mainnet => eest_develop
For devnet => eest_devnet

[bhartnett]

Thanks, will update.

[bhartnett]

If you want the stateless tests in the CI you can add it as a make file target and include it in the eest_full_test

Good idea, I'll add the make file target but I won't add it to eest_full_test yet until I resolve all the failures.

[bhartnett]

Here are the current test results when running the eest_develop blockchain tests with stateless execution enabled:

[Summary] 3122 tests run (217.9s): 3081 OK, 41 FAILED, 0 SKIPPED