Updated README.md with short scripts descriptions (#23)

* Add nftables support with config generator and IP checker

- Add generate_nft_blacklist.py for generating nftables configurations
- Add check_nft_blacklist.py for verifying IPs against blacklist
- Add blacklists_updater_nftables.sh for automated updates
- Add blacklists_nftables/ directory with generated configs
- Add GitHub Actions workflow for daily nftables updates
- Update README.md with nftables usage instructions

nftables is a modern replacement for iptables with better performance
and lower memory usage, especially for large rulesets. This addition
complements the existing iptables and nginx blacklist formats.

* Added nftables scripts help

* Updated README.md

blacklists_nftables/blacklist-v4.nft

@@ -1,5 +1,5 @@
 # Autogenerated nftables blacklist
-# Generated: 2026-01-12T10:00:52.332355Z
+# Generated: 2026-01-12T09:09:01.967693Z
 # Source: /tmp/blacklist-v4.txt
 # IPv4: 816, IPv6: 0
 

blacklists_nftables/blacklist-v6.nft

@@ -1,5 +1,5 @@
 # Autogenerated nftables blacklist
-# Generated: 2026-01-12T10:00:52.366124Z
+# Generated: 2026-01-12T09:09:02.010763Z
 # Source: /tmp/blacklist-v6.txt
 # IPv4: 0, IPv6: 17
 

blacklists_nftables/blacklist.nft

@@ -1,6 +1,6 @@
 # Autogenerated nftables blacklist
-# Generated: 2026-01-12T10:00:52.283144Z
-# Source: /home/runner/work/AS_Network_List/AS_Network_List/blacklists/blacklist.txt
+# Generated: 2026-01-12T09:09:01.912886Z
+# Source: /home/user/AS_Network_List/blacklists/blacklist.txt
 # IPv4: 816, IPv6: 17
 
 table inet filter {