Create storybook stories for ci_icon.vue

Description

Our ci_icons are important pieces of information that used widely in our application.

They should get some (at least manual) visual during testing, so we can iterate faster on them.

• Move ci icon from ~/vue_shared/components/ci_icon.vue to ~/vue_shared/components/ci_icon/ci_icon.vue
• Add stories to different status values
• Document inputs and outputs for each.