Connection with Zendesk API

[fszwedo]

In order to manipulate Zendesk tickets we need to have a way to connect with Zendesk API from our application.

• [x] Read the documentation about Zendesk API (authentication, sample requests)
• [x] Investigate how to make HTTP requests in Node.JS
• [x] Write the code that will request the list of all tickets from Zendesk and print it in the console
• [ ] Post a pull request for your branch

[fszwedo]

The outcome of this task should be:

• a file (in the services folder) with the function inside that will take three parameters: path to the endpoint, method, payload (for now payload it can be unused)
• if 'GET' will be passed as a method - the function should make a GET request to the specified URL and return the content of the response
• for now only 'GET' needs to be supported, the rest we can cover later
• I strongly advise to use some library for HTTP communication (like axios)

Please submit a pull request with this task completed for a review to get some more hands-on experience with version control @kettibell @yagi527