[FEATURE]: Hooks like one's the lucid orm has

[mohitxskull]

Describe what you want

https://lucid.adonisjs.com/docs/model-hooks

Such hooks will be useful, so we can transform values after they are fetched and make changes before they are saved automatically

[khalil-omer]

Is this a duplicate of #755? I also use the term "hooks" and that's what the Go ORM Ent uses, but I do think "signals" and
"middleware" are referring to the same concept.