feat: rtstream stream url player handling

[omgate234]

Pull Request

Description:
Adds ability to set player_url in RTStream object

Changes:

• Add ability to create player_url
• Add ability to set custom title, description and also slug prefix

Related Issues:

Testing:
Run a query as follows:

rt = collection.get_rtstream('rts-xxx')
rt.generate_stream(
    start=1771439388,
    end=1771439418,
    player_title="Something Amazing",
    player_description="Something amazing is done here!",
    player_slug_prefix="genius-01"
)