[FEATURE] - Avoid displaying the webview while running on Codespaces

[alefragnani]

This follows a similar idea from #10 , which tends to minimize unnecessary displays of the What’s New window.

Today, when the “What’s New” window appears every time you connect to a Codespace, simply because Codespaces installs the extension when it is started/initialized. The same happens if you decide to install the extension on a remote environment (Docker, SSH, WLS).

On these scenarios, the webview shouldn’t be displayed, because there is nothing new to display.

Let’s see how microsoft/vscode#102139 will work on these scenarios, when released. Maybe we could use the same approach, or even the API.

[alefragnani]

I couldn't find how to detect if "I'm installed on Remote, instead of simply running on Remote", so for now, it will only ignore Codespaces. But I still want to avoid display the WebviewPanelSerializer when installed on remote.