adding mongodbnotify to community

[bsbishop]

This uses an Atlas-MongoDB cluster (M0-free) to allow for notifications to be sent from anywhere but I mainly built it to allow Tidbyt to display notifications from Home Assistant.

[tidbyt[bot]]

⚠️ The automated review process is experimental and likely has bugs. Please bear with us as we iron out the kinks and enable you to ship changes at high velocity 🚀

Next Steps

Hello! Thank you so much for your change 🤜 🤛 . There are a few things you need to do:

• [ ] Sign the CLA if you haven't already
• [ ] Ensure your build is green! Any problem will display a proposed solution to try out
• [ ] Get a review, either by Tidbyt Bot or by a Tidbyt engineer

  Manual Review Required

  Hang tight! A Tidbyt engineer will be by shortly to review your change. Here is what they will be looking for:		Test	Details
  ✅	App Dir	All files are in a single app directory
  🟡	Modules	Usage of http.star requires review
  ✅	Original Author	The original author matches the PR author

[tidbyt-bot]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[bsbishop]

I have read the CLA Document and I hereby sign the CLA

[bsbishop]

Any movement on this? I'll be happy to hop on a call and explain / demonstrate, if it helps.