### What?
Previously, `.env` & `.env.example` modifications during `cpa` occurred
after a project was initialized.
### Why?
As a result, these modifications would be seen as uncommitted
modifications in the project repo.
### How?
Now, we make these modifications in the `createProject` script before
the project is initialized.
Also, updates the **template** `.env.example` files to use the generic
db name `your-database-name` for better alignment & clarity.
Fixes#10232