Provide GitHub Action based on hedera-local-node

[hendrikebbers]

When creating OSS software on top of Hedera, you want to run (integration) tests against a network. To do so, you can run all tests against testnet today. It would be way better to have a solution that can be used to run automatic tests against a temporary hedera-local-node instance. It would be awesome to have GitHub Action support for that:

• The action starts a hedera-local-node instance
• All tests can be executed against that instance
• The action will automatically destroy the instance after test run