proxy_finder: tach loai/chat luong dung Save-As (dat ten file), nhap nhieu file 1 lan

proxy_finder: them nut Tach chat luong (rattot/tot/trungbinh/kem .txt)

proxy_finder: them cham CHAT LUONG (rat tot/tot/tb/kem) + cot Danh gia + loc theo chat luong

proxy_finder: fallback bo verify SSL khi fetch (fix VPS thieu CA root)

proxy_finder: tu bao ly do khi 0 gom / 0 song (firewall/SSL)

proxy_finder: them nut Luu tach loai (proxy_http/socks5/socks4.txt)

add proxy_finder.py — tool DOC LAP chi tim+loc proxy theo loai (stdlib)