Add icon and logo for new integration - Appartme System

[MiloszSlabs]

Proposed change

I'm creating new Appartme System core integration and that's why I'm adding branding images.

Type of change

• Add a new logo or icon for a new core integration
• Add a missing icon or logo for an existing core integration
• Add a new logo or icon for a custom integration (custom component)
  • I've added a link to my custom integration repository in the PR description
  • I've opened up a PR for my custom integration on the Home Assistant
    Python wheels repository
• Replace an existing icon or logo with a higher quality version
• Replace an existing icon or logo after a branding change
• Removing an icon or logo

Additional information

• This PR fixes or closes issue: N/A
• Link to code base pull request: Add Appartme System integration core#129028
• Link to documentation pull request: Add Appartme System - new integration documentation home-assistant.io#35350
• Link to integration documentation on our website: N/A
• Link to custom integration repository: N/A

Checklist

• The added/replaced image(s) are PNG
• Icon image size is 256x256px (icon.png)
• hDPI icon image size is 512x512px for (icon@2x.png)
• Logo image size has min 128px, but max 256px, on the shortest side (logo.png)
• hDPI logo image size has min 256px, but max 512px, on the shortest side (logo@2x.png)

[frenck]

✅ Approved. Can be merged as soon as the parent PR gets merged.