Provide a way to silently approve in advanced files that won't be part of the published package

[Asaf-S]

Description

Scenario:

1. Commit changes to the code.
2. Run np.

Current behavior:

1. np prompts: The following new files will not be part of your published package: and waits for manual interaction.

Is the feature request related to a problem? No.

Possible implementation

Suggested behavior:

1. The current behavior should be the default behavior.
2. Provide a flag (e.g. --y or --suppress-ignored-files-warning) to auto-approve in advance the files that will not be part of your published package (without listing them and without human interaction).
3. If such an option exists - document it better :)

Alternatives

Manually approve the file list every time.