add openledger mainnet

[jayasuryaw]

This PR is focused on adding a new chain openledger mainnet to the configuration.

[github-actions]

You successfully submitted a PR! Due to the amount of PRs coming in: we will only look at PRs that the CI is happy with. We can also not hold your hand getting the CI green - just look how others that where merged did it and RTFM. So as long as there is any CI check that reports an error - no human will look at this. You might be able to ask for some support after supporting the project - e.g. by sending funds to lists.eth. When you fixed things after a requested change - then you also need to (re-)request a review.

[jayasuryaw]

The cli is green, I hope this PR is ready for review. @ligi

[jayasuryaw]

@ligi @FrederikBolding
We have made some contributions to the Chainlist community. We kindly request your support in reviewing and merging our PR.
trx hash: https://etherscan.io/tx/0x650568776b4f6b57f89cc3f660a113cc6ef218a009b0b5fbf9bb3b7d6bb7db2e

[github-actions]

PR merged - please consider contributing some funds to lists.eth