Tutorial Video on MTTL

Description of development task:

As a user, I want documentation on the downloading, hiding/revealing columns, and fullscreen features so I can know all the features I have available to me to make my MTTL experience better.

Given I am visiting the MTTL site for the first time,
When I load the page,
Then a prompt with an instructional video is displayed,
And A checkbox and option to "not display again" is offered.

Acceptance Criteria:

• create a tutorial video and link it to cookies for
• [ ]