Employees can view a specific gif post

### Why

**As an Employee**
**I want to be able to view a specific gif post**
**So that I can view all detail about the gif**

### Acceptance Criteria

```gherkin
Scenario: 
Given that an employee make a get request on this endpoint (i.e api/v1/gifs/<gifId>)
When such a gif exists on the platform 
Then such a gif will be view
```

