Function parse_path 

pub fn parse_path(path: &str) -> Result<ParsedPath>

Parse a path string into a ParsedPath

Remote paths have the format: alias/bucket[/key] Local paths are anything that:

• Starts with / (absolute path)
• Starts with ./ or ../ (relative path)
• Contains no / (could be local file in current directory)
• Or doesn’t match the alias/bucket pattern