Function parse_install_paths_from_pkgbuild 

pub fn parse_install_paths_from_pkgbuild(
    pkgbuild: &str,
    pkgname: &str,
) -> Vec<String>

What: Parse install paths from PKGBUILD content.

Inputs:

• pkgbuild: Raw PKGBUILD file content.
• pkgname: Package name (used for default install paths).

Output:

• Returns a vector of file paths that would be installed.

Details:

• Parses package() functions and install scripts to extract file paths.
• Handles common patterns like install -Dm755, cp, mkdir -p, etc.
• Extracts paths from package() functions that use install commands.
• This is a best-effort heuristic and may not capture all files.