Feature request: setting for `allow-duplicate-aliases`

## Problem

I have a scenario where I am duplicating a recipe imported from another `justfile`, and I want to redeclare the `fc` alias:

```justfile
# base.just
[no-cd]
full-check: biome-check prettier-check tsc-check
alias fc := full-check

# inheriting `justfile`
full-check: biome-check prettier-check eslint-check tsc-check
alias fc := full-check
```

Trying to run `full-check` generates this error:

```text
just --list
error: Alias `fc` first defined on line 31 is redefined on line 49
——▶ node_modules/@sablier/devkit/just/base.just:49:7
│
49 │ alias fc := full-check
```

## Solution

Introduce an `allow-duplicate-aliases` setting.

Or maybe there is no need for this setting, and Just should always allow the inheriting recipe's alias to override the inherited alias?

**Edit**: it looks like if I remove the alias declaration from the inheriting file, the inheriting script gets executed (not the base one), even if the alias is defined in the base file. At any rate, I think this behavior is slightly confusing, and users should be allowed to override aliases if the `allow-duplicate-recipes` setting is enabled.

Maybe this will get solved by https://github.com/casey/just/issues/2349?