Function resolve_path_to_files 

pub fn resolve_path_to_files(path: &Path) -> Result<Vec<PathBuf>>

Resolve a path to a list of SVG files, supporting glob patterns

This function handles:

• Single files: returns the file if it exists and is .svg
• Directories: finds all .svg files in the directory
• Glob patterns: expands patterns like “.svg” or “profiles/**/.svg”