cubejs create should generate a .gitignore file to avoid .env being version controlled #402
Description
Is your feature request related to a problem? Please describe.
When you create a new Cube.js project, it asks to add your database credentials to the .env. The problem is that .env is version controlled by default, which can accidentally expose a lot of database credentials and Cube API secrets on GitHub/GitLab if developers don't remember to add a .gitignore to exclude it.
Describe the solution you'd like
cubejs create should generate a .gitignore file with .env in it.
Describe alternatives you've considered
I'm creating this manually at the moment.
Additional context
Happy to open a PR for this, but wasn't sure if there was a reason why it didn't exist already. Thanks!