Added chrisdias.vscode-opennewinstance

[SamEdwardes]

• I have read the note above about PRs contributing or fixing extensions
• I have tried reaching out to the extension maintainers about publishing this extension to Open VSX (if not, please create an issue in the extension's repo using this template).
• This extension has an OSI-approved OSS license (we don't accept proprietary extensions in this repository)

Description

This PR introduces add the chrisdias.vscode-opennewinstance package.

• Request for the author to add: Feature request: Support for open-vsx.org chrisdias/vscode-opennewinstance#21
• MIT license: https://github.com/chrisdias/vscode-opennewinstance/blob/master/LICENSE.md

I tested by running the following:

GITHUB_TOKEN=xxxx EXTENSIONS=chrisdias.vscode-opennewinstance SKIP_PUBLISH=true node publish-extensions.js

[filiptronicek]

All looks good, thanks for the contribution!