Adaptive icon

Description

New adaptive icon for main app, debug and reporter.

For debug and reporter, this is a test but the result could be not convincing at all.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Enhancement (non-breaking change which cleans up / improves existing functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the CONTRIBUTING section of the README document.

Fixes: #1135 (closed)