Function parse_diff_name_status 

pub fn parse_diff_name_status(output: &str) -> Result<ChangeSet>

Parse git diff --name-status -z output

Format: status\0filename\0 or status\0old\0new\0 for renames

Status codes:

• A = added
• M = modified
• D = deleted
• R<similarity> = renamed (e.g., R075)
• C<similarity> = copied
• T = type change (treat as modified)
• U = unmerged (treat as modified)
• X = unknown (treat as modified)

See: https://git-scm.com/docs/git-diff#_diff_format

Errors

Returns GitError::InvalidOutput when the diff stream is truncated or otherwise malformed (missing filenames, rename metadata, or status codes).