Add config for running extension tests (#4495)

* Add .bat for running extension tests (currently only Notebook) and set up launch.json with 2 new launch configs for running & debugging extension tests.

* Rename files to make it clear these aren't the integration tests

* Update launch.config too

* Fix spacing and missed file name update

scripts/test-extensions.sh

@@ -1,22 +0,0 @@
-#!/bin/bash
-set -e
-
-if [[ "$OSTYPE" == "darwin"* ]]; then
-	realpath() { [[ $1 = /* ]] && echo "$1" || echo "$PWD/${1#./}"; }
-	ROOT=$(dirname $(dirname $(realpath "$0")))
-	VSCODEUSERDATADIR=`mktemp -d -t 'myuserdatadir'`
-	VSCODEEXTDIR=`mktemp -d -t 'myextdir'`
-else
-	ROOT=$(dirname $(dirname $(readlink -f $0)))
-	VSCODEUSERDATADIR=`mktemp -d 2>/dev/null`
-	VSCODEEXTDIR=`mktemp -d 2>/dev/null`
-fi
-
-cd $ROOT
-echo $VSCODEUSERDATADIR
-echo $VSCODEEXTDIR
-
-./scripts/code.sh --extensionDevelopmentPath=$ROOT/extensions/notebook --extensionTestsPath=$ROOT/extensions/notebook/out/test --user-data-dir=$VSCODEUSERDATADIR --extensions-dir=$VSCODEEXTDIR
-
-rm -r $VSCODEUSERDATADIR
-rm -r $VSCODEEXTDIR