feat(queryAsPath): implement endpoints

ilp-cw-api/[GET] queryAsPath/invalid = null.bru

@@ -0,0 +1,27 @@
+meta {
+  name: invalid = null
+  type: http
+  seq: 7
+}
+
+get {
+  url: {{API_BASE}}/queryAsPath/invalid/null
+  body: none
+  auth: inherit
+}
+
+assert {
+  res.status: eq 200
+}
+
+tests {
+  test("Status code is 200", function() {
+    expect(res.status).to.equal(200);
+  });
+  
+}
+
+settings {
+  encodeUrl: true
+  timeout: 0
+}