Dagger Node.js SDK 0.3: API improvements, better error handling and less boilerplate

The Dagger Node.js SDK 0.3.0 has been released with several improvements, including better error handling and reduced boilerplate code. The API now allows for more flexible optional parameters, making the code shorter and more readable. This release also introduces a new centralized error handling system, providing more precise error messages and codes. Additionally, there are new methods in the improved filesystem API to make it easier to work with container filesystems. The Dagger community has provided valuable feedback, which has been incorporated into this latest release, bringing the overall experience closer to what Node.js developers expect and use elsewhere.