JS: Add API graph test for explicit 'this' passing

Author: asgerf

javascript/ql/test/ApiGraphs/explicit-this/VerifyAssertions.expected

@@ -0,0 +1 @@
+import ApiGraphs.VerifyAssertions

javascript/ql/test/ApiGraphs/explicit-this/VerifyAssertions.ql

@@ -0,0 +1,6 @@
+{
+    "name": "explicit-this",
+    "dependencies": {
+        "something": "*"
+    }
+}

javascript/ql/test/ApiGraphs/explicit-this/package.json

@@ -0,0 +1,7 @@
+const lib = require('something');
+
+function f() {
+    this.two(); /** use=moduleImport("something").getMember("exports").getMember("one").getMember("two").getReturn() */
+}
+
+f.call(lib.one);