Add New Chain 404, 444444

Thanks for your pull request to add a new support in Sourcify.

If you haven't done so, please follow the instructions on how to request chain support in docs.

Please check the following items before submitting your pull request for a speedy review.

Checklist

• [x] The branch is named as add-chain-<chainId>.
• [x] I haven't modified the chains.json file directly.
• [x] In sourcify-chains.json file
  • [x] I've set supported: true.
  • [x] I haven't added an rpc field but the one in chains.json is used (if not, please explain why).
• [x] I've added a test in chain-tests.js file.
• [x] test-new-chain test in Circle CI is passing.

Could you remove the package-lock.json update from this PR? Other than that it looks fine :)

I have removed package json from commit history but one ci test stil seems to be failing. Pls help

@manuelwedler

You now included the changes to chains.json in your commit. Could you rebase your changes on latest staging and only include sourcify-chains-default.json and chain-tests.js?

The node-v16 CI job is expected to fail. Don't worry about that

@vyomshm Could you please clean up this PR?

Closing due to inactivity. Feel free to open and do the fixes