Chore: Add Recent Demo Apps to Tech Stack List of Examples

[nelsonic]

A lot of good work has been done in the last few months by @LuchoTurtle 🎉 We need to link to it from the https://github.com/dwyl/technology-stack#beginner-tutorials section of the README.md. Currently: https://github.com/dwyl/technology-stack/tree/178d5ebfc864274555b9be33d8988482ac140844#beginner-tutorials

Todo

• [x] Comb through all the examples/demos/tutorials we have created in the last few months e.g:

  1. https://github.com/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial
  2. https://github.com/dwyl/flutter-phoenix-channels-demo
  3. https://github.com/dwyl/learn-payment-processing
  4. Hits: https://github.com/dwyl/hits fully working app we use every day to track page views in our GitHub projects.
  5. Labels: https://github.com/dwyl/labels we use this to sync labels to new GitHub projects.
  6. there are more. please list them all!

• [x] Link to them from the tutorials section.

• [x] Create a PR

• [x] Assign for review

This is a T25min "admin" task that can be done at any time but ideally soon. 🙏 The idea is to showcase the number of tutorials we have.

Context

I recently read a post on HN with some twit complaining about the lack of up-to-date tutorials for learning Phoenix and LiveView I feel that we have systematically addressed it and there is no longer an excuse to not learn.

Next time someone complains, I will remind them that all our 10+ Phoenix + LiveView tutorials are up-to-date and link directly to this list in the Tech Stack repo. 👌