Admin user sees default images on the slide out panel

[sidolov]

Description

• Define Magento Search API interface
• Implement Magento Search API endpoint stub
• Implement basic grid data provider that uses endpoint stub
• Basic rendering on default admin UI component grid

Documentation

Story: User accesses stock images from Magento Admin
App Design Document: Adobe Stock Image Search Design

Dependency

Current task has a dependency on the: Admin user access stock images from Magento Media Gallery. Please, make sure that the mentioned task is done before starting any progress on this.

QA notes

• 32 images are shown when the slide panel is opened

[sidolov]

Fixed in scope of: #53