[display] add a .vscode launch config + default task to the tests (#7048)

tests/display/.vscode/launch.json

@@ -0,0 +1,12 @@
+{
+	"version": "0.2.0",
+	"configurations": [
+		{
+			"name": "Debug",
+			"type": "haxe-eval",
+			"request": "launch",
+			"cwd": "${workspaceRoot}",
+			"hxml": "${workspaceRoot}/build.hxml"
+		}
+	]
+}

tests/display/.vscode/tasks.json

@@ -0,0 +1,13 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"type": "hxml",
+			"file": "build.hxml",
+			"group": {
+				"kind": "build",
+				"isDefault": true
+			}
+		}
+	]
+}