fix(api): Use query params instead of body

[vladimirkosmala]

📑 Description

The getVideoStatistics arguments were passed using body, but the Bunny API uses query string for this method.
The consequence was to have no argument passed to the API and return a global information (the whole library) instead of a specific video by its GUID.
The fix changes where the data are put: in the query string instead of the body.

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

ℹ Additional Information

The tests should have seen it but the cost to update the test for this case is high: it would require to upload 2 videos (easy) but also to simulate watch time (harder) to distinguish between the global stats and the specific stats which have both '0' values because no watch time is set.
To me it's not worth it.

[dan-online]

@vladimirkosmala Great catch, I agree with your thoughts on the tests, it's not feasible or necessary to attempt to add watch time or a similar statistic