Publish the liberty tools plugin for vscode on https://open-vsx.org/ as well

[hhue13]

We are trying to implement DevSpaces on RedHat Openshift plattform. During tests we found that the Liberty plugin is not available for installation (but manual download and install seems to work). As per the documentation from RedHat at https://docs.redhat.com/en/documentation/red_hat_openshift_dev_spaces/3.23/html-single/administration_guide/index#extensions-for-microsoft-visual-studio-code-open-source-adding-or-removing-extensions-in-the-embedded-open-vsx-registry-instance if would be necessary that the VSIX file is available as open-vsx.org as per the following section of the documentation:

If the extension is only available from [Microsoft Visual Studio Marketplace](https://marketplace.visualstudio.com/VSCode), but not [Open VSX](https://open-vsx.org/), you can ask the extension publisher to also publish it on [open-vsx.org](https://open-vsx.org/) according to these [instructions](https://github.com/eclipse/openvsx/wiki/Publishing-Extensions#how-to-publish-an-extension), potentially using this [GitHub action](https://github.com/marketplace/actions/publish-vs-code-extension).

Therefore I'm wondering if you could publish the liberty-tools plugin at open-vsx.org as well so that we can load the plugin automatically if we start a DevSpace workspace using the DevSpace's extensions.json file.

Thanks, Hermann

[yeekangc]

Liberty Tools is now published to Open VSX Registry: https://open-vsx.org/extension/Open-Liberty/liberty-dev-vscode-ext. @hhue13, check it out when you have a moment and let us know if you have feedback.