Add Eternal Summer - custom integration icon

[Calamarus]

Proposed change

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
• [ x ] 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
  • [ x ] I just want to have an icon available for my custom integration, the integration is not public, so there is no URL
    Python wheels repository](https://github.com/home-assistant/wheels-custom-integrations)
• 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: fixes #
• Link to code base pull request:
• Link to documentation pull request:
• Link to integration documentation on our website:
• Link to custom integration repository:

Checklist

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