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

.vscode/launch.json

@@ -147,7 +147,23 @@
 			"outFiles": [
 				"${workspaceFolder}/out/**/*.js"
 			]
-		}
+		},
+		{
+			"type": "chrome",
+			"request": "launch",
+			"name": "Run Extension Unit Tests",
+			"windows": {
+				"runtimeExecutable": "${workspaceFolder}/scripts/test-extensions-unit.bat"
+			},
+			"osx": {
+				"runtimeExecutable": "${workspaceFolder}/scripts/test-extensions-unit.sh"
+			},
+			"linux": {
+				"runtimeExecutable": "${workspaceFolder}/scripts/test-extensions-unit.sh"
+			},
+			"webRoot": "${workspaceFolder}",
+			"timeout": 45000
+		},
 	],
 	"compounds": [
 		{
@@ -157,6 +173,13 @@
 				"Run Unit Tests"
 			]
 		},
+		{
+			"name": "Debug Extension Unit Tests",
+			"configurations": [
+				"Attach to Extension Host",
+				"Run Extension Unit Tests"
+			]
+		},
 		{
 			"name": "Debug azuredatastudio Main and Renderer",
 			"configurations": [