Inline tag

[SimonLab]

Experiment with content editable linked to https://github.com/dwyl/mvp/issues/221#issuecomment-1331935582

At the moment just add span with color red on the "tag" text content:

[nelsonic]

This will be an awesome feature once we get the basic tagging working. For now we can simply parse all the words in the item.text <textarea> and include them as suggestions when the person starts typing in the tags <input>. That shouldn't require too much code. But please have a look at: https://github.com/dwyl/mvp/issues/221#issuecomment-1404384279