feat: enhance custom default paths logic to allow specifying a branch

[phgermanov]

Updated path processing logic in processCustomDefaultsPath function to handle different path types correctly:

• Absolute GitHub URLs are preserved as-is
• Paths with explicit branch references (e.g., org/repo/path@branch) are converted to full GitHub URLs
• Simple file paths (relative paths starting with ./ or ../ or paths without /) are kept as-is
• Other paths are treated as repository-relative and get the full GitHub URL with current branch

[bitmaskit]

you have to run npm run dist:update after commit or npm run dist:build before commit . I think thats why there are lint errors