feat: Verify "ISE HVE Essentials" Publisher

### Issue Description

When installing the recommended extensions, this message pops up.

```txt
Do you trust the publisher "ISE HVE Essentials"?
The extension HVE Core is published by ISE HVE Essentials. This is the first extension you're installing from this publisher.

ISE HVE Essentials is not verified.

Visual Studio Code has no control over the behavior of third-party extensions, including how they manage your personal data. Proceed only if you trust the publisher.
```

### Additional Context

_No response_

Start by checking how HVE Core is published to the Visual Studio Code Marketplace and how the publisher identity "ISE HVE Essentials" is configured. Determine the verification requirements and confirm completion when the Marketplace no longer shows the publisher as unverified.

Written by the indexing model from the issue text.