Always show the Design Tab on Issues but indicate the LFS is turned off or wrong tier

Problem to solve

As a user, I need to understand why the Design Tab is not showing up for me if LFS is turned off for my repo and I am unaware.

Intended users

• Presley (Product Designer)

Further details

• This issue seeks to build awareness about the technical aspects of LFS (Large file storage) and the correct tier
• GitLab LFS (Large file storage) currently defaults to on for new instances and is enabled on gitlab.com
• This will contribute to our Direction by getting more users by guiding them to the feature

Proposal

• Support "always on" by showing the Design Tab by default even if LFS is off or am in the wrong tier
  • This will increase awareness of the feature
• When clicking the Design Tab, show a message that indicates how to turn on LFS show the following message
  • IF ( correct_tier==false OR lfs==false )
    • Show the following message with correct links
    • For designs to work, you need to have
      • LFS enabled on your repo. You can do that here.
      • The tier of [Platinum/Silver]. You learn about our plans here.

What does success look like, and how can we measure that?

• Track increase in Design Tab views
• Track increase in LFS enablement

Documentation

• Will need to update how the Design Tab looks when it's not enabled and highlight this in the docs

Links / references