test: implemented tests for output list

Signed-off-by: Sam Alba <sam.alba@gmail.com>

tests/cli/output/list/main.cue

@@ -0,0 +1,19 @@
+package main
+
+#A: {
+	// a string
+	str:    string           @dagger(output)
+	strSet: "pipo"           @dagger(input)
+	strDef: *"yolo" | string @dagger(input)
+
+	// test url description
+	url: "http://this.is.a.test/" @dagger(output)
+	url2: url
+}
+
+cfgInline: {
+	#A
+}
+
+cfg: #A
+cfg2: cfg