feat: EnvEditor.add with empty value for .env.example

[Julien-R44]

As explained here: adonisjs/core#4533

We add a third argument withEmptyExampleValue to the EnvEditor add method which allows to insert a empty value in the .env.example file

const editor = await EnvEditor.create(fs.baseUrl)
editor.add('PORT', 3000, true)

This will result in PORT=3000 in the .env file, but with PORT= in the .env.example file.

[Julien-R44]

CI failing on windows due to nodejs/node#52682

I've temporarily disabled it until issue is resolved. See this commit adonisjs/.github@535382e

[thetutlage]

Actually, I have no issue with the implementation. We are making EnvEditor class to know about the .env.example file and how it should be treated different to others.

Ideally, this logic should be handled in the place where we use the EnvEditor to update two files, i.e .env and .env.example.

[thetutlage]

Wait. Ignore my last comment. I thought that EnvEditor could be used to edit one file at a time by giving it's name.

Turns out that is not the case, and we already have hardcoded logic inside it.