[EPIC] Creating designs + UI for feature flag dashboard

[vikhyat187]

This task aims to create a simple wireframe for the dashboard for feature flags which can helps in
This feature should come on dashboard site.

• Creating feature flags. A button to create feature flags.[Super user role]
• Viewing all feature flags currently present.
• Resetting the allowed request count.
• Showing the current request count consumed.
• Showing the feature flags, whose ETA has got passed. [Possible feature]

The smaller tasks

• Creating dashboard for feature flags #101
• Form for creating / updating feature flags #102
• A super user only dashboard to view the requests served #103