Feature: Store prompt list + Prompt Selector

[vitorrm]

As a user I would like to be able to create multiple prompts so I can choose one of those on Youtube screen before I hit the summarize button

Example of use:
I have tunned my prompt to summarize videos about finance, however I would like to create a tunned version for Recipe videos as well, so it would be nice to be able to store multiple prompts and select between them before clicking on the summarize button.

The first on the list could be the "default" one or you could have a combo box to select the default.

It would also be nice if the "Follow-up Prompts" were also part of the list item so we could customize the follow-up to match the prompts