publish to open-vsx.org

[jackfoxy]

The HLS extension is not natively available to VsCodium (VsCode without the Microsoft telemetry) because VsCodium uses the open-vsx extension marketplace. It requires a hack to access the Microsoft marketplace.

Documentation on publishing to open-vsx here
https://github.com/VSCodium/vscodium/blob/master/DOCS.md#howto-vscode-marketplace