[FEATURE] Adjust download_master_playlist to return JSON data when no parameters are passed

[coldsofttech]

Describe the feature request
Currently, download_master_playlist raises UserWarning when no parameters are passed. This warning message also includes, JSON structure for all available resolutions. It is not straight-forward for consumers to parse the available resolutions from warning message. Hence, adjust the return to raise Warning as well as return JSON-formatted for all available resolutions.

Describe the desired outcome
download_master_playlist to return warning as well as JSON-formatted data.

Describe alternatives considered
None

Additional context
None