Feature: create command

[JosephCatrambone]

Adds a command to create the guardrails config file.

Per specification:

• Defaults to config.py and will prompt on overwrite.
• Fills installed guards with TODO for parameters and notifies user.

Departures from specification:

• It was nice to have --dry-run as an option to see what would be created and written. This will not save a config file but will sanity check that the validators exist and will print the config file to the console.

Examples:

Simple Happy Path:

% guardrails create --validators hub:https://guardrails/valid_length,hub:https://guardrails/lowercase
Checking validators...
Success!
Installing...
Success!
Generating config file...
Saved configuration to config.py
Replace TODOs in config.py and run with `guardrails start --config config.py`

% cat config.py
from guardrails import Guard
from guardrails.hub import (
        ValidLength,
        LowerCase
)
guard = Guard()
guard.use_many(
        ValidLength( TODO Fill these parameters ),
        LowerCase( TODO Fill these parameters )
)

Dry Run:

% guardrails create --validators hub:https://guardrails/detect_pii --dry-run
Checking validators...
Success!
Installing...
Fake installing guardrails/detect_pii
Success!
Generating config file...
Not actually saving output to config.py
The following would have been written:

from guardrails import Guard
from guardrails.hub import DetectPII
guard = Guard()
guard.use(DetectPII( TODO Fill these parameters ))

[zsimjee]

As per convo, we'll remove auto-incrementation of config-x.py as a filename. Instead, prompt to overwrite