Add random watchlist-movie button

[WinterIsCoding23]

Value proposition
As a user I want to click a random-button in order to have a random movie from my watchlist suggested to me.

Description

Acceptance criteria

• By clicking the random-watchlist-movie-button the user is directed to the detail page of a random movie from the Watchlist.
• The displayed movie is marked as a favourite.
• By clicking the random-watchlist-movie-button AGAIN the detail page of a DIFFERENT movie from the Watchlist is shown.

Tasks

• Create a random-watchlist-movie-button in the Watchlist-component on the startpage (OR in the navbar, tbd)
• Link the onClick-event of the button to a random-function that shows a random watchlist-movie detail page
• Replace the random movie-infos (title, image) on the startpage by a another random-movie-button and adapt the styling (size!) depending on the styling of the random-watchlist-movie-button
• Link the onClick-event of the random-movie-button to a random movie from the database (API)

[WinterIsCoding23]

• Add update of streaming-options in PUT-request (for case that watchlist-movie suddenly is available for streaming and other way round)
• Change randomMovie-generation to include mainstream