otf: add patch api endpoint for person and thirdparty

src/Bundle/ChillPersonBundle/Resources/public/vuejs/_api/OnTheFly.js

@@ -27,8 +27,27 @@ const postPerson = (body) => {
          throw Error('Error with request resource response');
       });
 };
-   
-export { 
-   getPerson, 
-   postPerson 
+
+/*
+* PATCH an existing person
+*/
+const patchPerson = (id, body) => {
+    const url = `/api/1.0/person/person/${id}.json`;
+    return fetch(url, {
+        method: 'PATCH',
+        headers: {
+            'Content-Type': 'application/json;charset=utf-8'
+        },
+        body: JSON.stringify(body)
+    })
+        .then(response => {
+            if (response.ok) { return response.json(); }
+            throw Error('Error with request resource response');
+        });
+};
+
+export {
+   getPerson,
+   postPerson,
+   patchPerson
 };