Extension host (#20)

* Implement net.Server

* Move Socket class into Client

This way we don't need to expose anything.

* Remove some unused imports

* Pass environment variables to bootstrap fork

* Add debug log for when socket disconnects from server

* Use VSCODE_ALLOW_IO for shared process only

* Extension host can send messages now

* Support callback for logging

This lets us do potentially expensive operations which will only be
performed if the log level is sufficiently low.

* Stop extension host from committing suicide

* Blank line

* Add static serve (#21)

* Add extension URLs

* how did i remove this

* Fix writing an empty string

* Implement dialogs on window service

packages/vscode/src/fill/product.ts

@@ -5,7 +5,11 @@ const product = {
 	nameLong: "vscode online",
 	dataFolderName: ".vscode-online",
 	extensionsGallery: {
-		serviceUrl: "",
+		serviceUrl: "https://marketplace.visualstudio.com/_apis/public/gallery",
+		cacheUrl: "https://vscode.blob.core.windows.net/gallery/index",
+		itemUrl: "https://marketplace.visualstudio.com/items",
+		controlUrl: "https://az764295.vo.msecnd.net/extensions/marketplace.json",
+		recommendationsUrl: "https://az764295.vo.msecnd.net/extensions/workspaceRecommendations.json.gz",
 	},
 	extensionExecutionEnvironments: {
 		"wayou.vscode-todo-highlight": "worker",