IBX-4542: Implemented ImageAdditionalData type

[barw4]

Question	Answer
JIRA issue	IBX-4542
Type	improvement
Target Ibexa version	v3.3
BC breaks	no

Example query:

{
  media {
    image (id: 261) {
      id,
      name,
      image {
        id,
        fileName,
        fileSize,
        additionalData {
          focalPointX,
          focalPointY
        }
      }
    }
  }
}

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[micszo]

Worked fine for me. 👍🏻

Tested on Ibexa Commerce 3.3.30-dev.