Ability to define safe/unsafe modes and force to ignore _tasks

[divad1196]

Actual Situation

If we define _tasks, the end user will need to use --UNSAFE/--trust to generate the project from the template.
In some situation, the _tasks commands are just convenience.

More precisely, in my case:

_tasks:
    - "git init -b main && git add -A && git commit -m 'Initial commit'"
    - "pre-commit install"

Desired Situation

I would like the end-user to be able to use the template without running any unsafe feature.

Proposed solution

The end-user could be able to use a flag (e.g. --no-script) to not run any unsafe feature but still create the project.

From the template's creator side, an additional feature would be to mark the _tasks as required/optional to control if the end-user is allowed to copy the project without the tasks.