Use a token other than the Jellyfin token for requests from Alexa server

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Please describe which problem should be solved

Currently all requests to the Jellyfin server contains the auth token of the user for the Jellyfin instance and this token is passed to Alexa services for Alexa media requests. The token has more rights on the Jellyfin server than necessary, e.g. can modify files. This token should not be passed to Alexa services for media playback.

Optional: Describe your idea for a solution

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