KiiChain/kiijs-sdk

AI Summary: Expand the unit tests for the @kiichain/kiijs-proto package to cover a larger portion of the KiiChain protofiles. This involves creating new test files in the `packages/proto/tests` directory, writing unit tests for each protofile, and ensuring the tests run successfully in the CI/CD pipeline. A wallet key with testnet funds will be needed for testing.

AI Summary: The task is to debug and fix failing tests in the `@kiichain/kiijs-proto` package. The tests are failing because they use the wrong account and don't have sufficient funds to perform transactions. The solution involves identifying the correct account to use, ensuring it has a sufficient balance, and updating the tests accordingly.