Add ipt-server role with firewall configuration and management

- Created handlers for reloading systemd and restarting firewall services.
- Implemented tasks to ensure the existence of configuration directories and files.
- Deployed host-specific and shared configuration files using templates.
- Added scripts for managing IPv4 and IPv6 firewalls.
- Configured systemd service units for ipt-firewall and ip6t-firewall.
- Enabled and started firewall services on system boot.

roles/ipt-server/files/etc/ipt-firewall/ban_ipv4.list.sample

@@ -0,0 +1,36 @@
+# - IPv4 addresses listet here will be completly banned by the firewall
+# -
+# -    - Line beginning with '#' will be ignored.
+# -    - Blank lines will be ignored
+# -    - Only the first entry (until space sign or end of line) of each line will be considered.
+# -
+# - Valid values are:
+# -    complete IPv4 adresses like 1.2.3.4 (will be converted to 1.2.3.0/32)
+# -    partial IPv4 addresses like 1.2.3 (will be converted to 1.2.3.0/24)
+# -    network/nn CIDR notation like 1.2.3.0/27
+# -    network/netmask notaions like 1.2.3.0/255.255.255.0
+# -    network/partial_netmask  like 1.2.3.4/255
+# -
+# - Note: 
+# -    - wrong addresses like 1.2.3.256 or 1.2.3.4/33 will be ignored
+# -
+# - Example:
+# -    79.171.81.0/24
+# -    79.171.81.0/255.255.255.0
+# -    79.171.81.0/255.255.255
+# -    79.171.81
+
+# CHINANET-JS
+222.184.0.0/13 
+61.160.0.0/16
+
+# CHINANET-GX
+116.8.0.0/14
+
+# BAIDU-HK - Hong Kong
+103.235.44.0/22
+# UNICOM-HE - China Unicom Hebei province network
+110.240.0.0/12
+# CMNET - China Mobile Communications Corporation
+39.128.0.0/10
+