Improve documentation - Require DotEnv VsCode Extension

[Maxgoods62]

First, thanks for the extension, it's usefull !

During installation, I couldn't get it to work. I disabled all my extensions, changed theme: it still didn't work.

I understood afterwards that it was necessary to install the DotENV extension, because without it, .env files are considered as plain text.

So, it might help other people to add a line in the documentation saying to install Dotenv.

[thorwebdev]

You, sir, are my hero, thank you!

[johnpapa]

Thanks

We are open for contributors too

[johnpapa]

I made this an automatic extension dependency in v0.3.0

this way it installs dotenv for you