Web: change yarn web to run with our server instead of playground (#139725)

* web - first cut `yarn web` via our server

* properly pipe output

* web - remove traces of web playground

* web - remember last opened workspace for convinience

* use vscode-test-web for server less, clean up web commands

* fix comment

* fix `yarn web`

* rename to code-server

* open system browser

* code-server script: use minimist

* test resolver: use ./scripts/code-server

* integartion tests: fix code-server command name

Co-authored-by: Martin Aeschlimann <martinae@microsoft.com>

scripts/code-web.bat

@@ -0,0 +1,20 @@
+@echo off
+setlocal
+
+title VSCode Web Serverless
+
+pushd %~dp0\..
+
+:: Sync built-in extensions
+call yarn download-builtin-extensions
+
+:: Download nodejs executable for remote
+call yarn gulp node
+
+:: Launch Server
+FOR /F "tokens=*" %%g IN ('node build/lib/node.js') do (SET NODE=%%g)
+call "%NODE%" resources\web\bin-dev\code-web-playground.js %*
+
+popd
+
+endlocal