Rename VS Code Extension PRIOR to removal from Preview

[claudiaregio]

• [x] Extension name
• [ ] Docs
  • [ ] Doing Data Science in Visual Studio Code
  • [ ] old blog posts & YouTube videos
    • [ ] when people find them, should they be directed to Polyglot Notebooks?
    • [ ] when people search for Polyglot Notebooks, should these posts be discoverable?
• [x] Package name in package.json
• [ ] VS Code extension icon
• [x] Command prefixes in command palette
  • [x] Also command ID prefix - shim old commands
• [x] config -- can we have a back compatibility shim and punt this to post-GA?
  • [x] JSON property names: We MIGHT be able to change this
  • [x] update display name in the ui
• [ ] VS Code grammar and language IDs
• [ ] ~~Extension ID~~
  • [ ] Changing this would require to publish a new extension and would cause us to lose all old reviews
  • [ ] Changing this would affect the vscode uri to open notebooks from uri
  • [ ] Would this affect the configuration namespace?
• [ ] Documentation text - mention Polyglot Notebooks at top of README so users know they're in the right place
• [x] Language/kernel pickers - remove the term .NET Interactive? does it need replacing at all?
• [x] VS Code bottom panel label
• [x] VS Code bottom panel output items: diagnostics and log channels
• [x] .ipynb metadata
• [x] NuGet package tags
• [ ] VS Marketplace extension tags
• [ ] Folder names for - DO THIS LAST
  • [ ] dotnet-interactive-vscode
  • [ ] dotnet-interactive-ads
  • [ ] dotnet-interactive-vscodeinsiders