Integrate signalmessenger to hacs

[MichaelBitard]

No description provided.

[github-actions]

🎉 HACS repository validator action summary 🎉
✅ The repository is not archived
✅ manifest.json file exist
✅ All required keys are present in manifest.json
✅ hacs.json has the 'name' key set
✅ The repository has a description
✅ signalmessenger is added to https://github.com/home-assistant/brands NICE!
✅ The repository has topics
✅ The repository has issues enabled
✅ This day ends with an 'y' (Friday)
✅ info.md exists
❌ HACS load check (more-info: https://hacs.xyz/docs/publish/include#check-hacs )

[marecabo]

Thank you for adding the signal integration to HACS. Do we need to add this repo as a custom repo to HACS or does it appear automatically?

[MichaelBitard]

If you cannot wait, you can add it as a custom repository 😄
If you can wait, a PR is waiting: hacs/default#1004