Schema for CONFIG_FILE_PATH

```
ARGUMENTS
CONFIG_FILE_PATH path to an Adobe I/O Developer Console configuration file
```

**Describe the solution you'd like**
We should define the schema of this file in case someone wants to generate their own.

Start by tracing the CONFIG_FILE_PATH argument in the CLI and reviewing how the Adobe I/O Developer Console configuration file is currently handled. Done means defining and documenting the file schema so someone can generate a valid configuration independently.

Written by the indexing model from the issue text.