Register function environment variables

Nadie ha tomado este issue todavía.

This extension is able to detect usage of undefined global variables:

However, `setfenv` is used on this function to define the missing variable, but at another point in the code that the parser can't detect. Is it possible to somehow tell the parser to ignore this diagnostic? Something like:
```lua
local block = function(_)
-- env: {block, assert, error}
block()
end
```

Then it would accept those values? I know you can define globals for the project, but this doesn't affect the entire project, only those functions, so it would be cool if you could define it somehow.

Alternatively, could we just disable the diagnostic?
```lua
local block = function(_)
-- disable: undefined-global
block()
end
```

I don't know if the parser supports reading comments like that, let me know if that won't work or if you have better ideas for it.

Comienza rastreando el diagnóstico de global no definido del parser y cómo lee las definiciones de variables globales a nivel de proyecto. Evalúa la anotación de entorno local a la función y el comentario para deshabilitar el diagnóstico propuestos en el issue, y verifica después que la sintaxis seleccionada suprima o resuelva únicamente la advertencia prevista dentro del ámbito de la función.

Escrito por el modelo de indexación a partir del texto del issue.