#239 add ephember icons

[ttroy50]

Proposed change

Adds the ephember icons as per issue #239

Type of change

• Add a new logo or icon for a new integration
• [x ] Add a missing icon or logo for an existing integration
• Replace an existing icon or logo with a higher quality version
• Removing an icon or logo

Additional information

• This PR fixes or closes issue: fixes EPH Controls is missing brand images #239
• Link to code base pull request:
• Link to documentation pull request:
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/ephember/

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)
• 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)

[cogneato]

Many thanks, @ttroy50 ! 👍