[Feature] Add a tasks that makes it easy to validate the .mez file

Preflight Checklist

• I have installed the latest version of Power Query SDK.
• I have checked existing resources, including the common issues and the release notes.
• I have searched for similar issues.

Problem

It's possible to compile a connector without syntax errors, but have that connector fail to load in Power BI Desktop. Many of these errors can be detected by running the pqtest info command over the mez file.

Examples

• Publish record not found (i.e. typo in name)
• Data Source Kind path issues (i.e. multiple data source functions with different sets of required parameters)

Desired Solution

Built-in task to run the info command.
Could just return a pass or fail or return the full info result.
Could be run automatically after a build step.

Alternatives and Workarounds

You can manually run the pqtest.exe info command.

Additional Context

No response

No file or test is named in the issue. Start by running the existing pqtest.exe info command on a .mez file and then inspect how VS Code tasks and build steps are represented in this SDK. Done should be a built-in task that runs the info command and has an agreed pass/fail or full-output behavior, including whether it runs after builds.