Use signals in generated template

[RyanClementsHax]

Is there an existing issue that is already proposing this?

• [X] I have searched the existing issues

Is your feature request related to a problem? Please describe it

We should use signals in the generated template cuz they are 🔥🔥🔥

Describe the solution you'd like

Use signals

What is the motivation / use case for changing the behavior?

They're 🔥🔥🔥🔥

[RyanClementsHax]

I have a WIP branch https://github.com/mantis-apps/mantis-cli/tree/signals