Add MWAN3 integration

[m2sh]

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)
  • [x] 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: fixes #
• Link to code base pull request:
• Link to documentation pull request:
• Link to integration documentation on our website:
• Link to custom integration repository: https://github.com/m2sh/ha-mwan3

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 ([email protected])
• [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 ([email protected])

[home-assistant[bot]]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks :+1:

Learn more about our pull request process.

[frenck]

Since there was no response at all, I'm declaring this PR stale and closing it. Feel free to re-open this PR when you feel like that is the appropriate thing to do.