add bundle.json and readme

Signed-off-by: maosiping <maosiping@huawei.com>

README.md

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+What is iptables?
+iptables is the userspace command line program used to configure the Linux 2.4.x and later packet filtering ruleset. It is targeted towards system administrators.
+
+Since Network Address Translation is also configured from the packet filter ruleset, iptables is used for this, too.
+
+The iptables package also includes ip6tables. ip6tables is used for configuring the IPv6 packet filter.
+
+Dependencies
+iptables requires a kernel that features the ip_tables packet filter. This includes all 2.4.x and later kernel releases.
+
+Main Features
+listing the contents of the packet filter ruleset
+adding/removing/modifying rules in the packet filter ruleset
+listing/zeroing per-rule counters of the packet filter ruleset
+Git Tree
+The current development version of iptables can be accessed at https://git.netfilter.org/iptables/.
+
+Authors
+iptables was mostly written by the netfilter core team, but it has received numerous contributions from many individuals.

bundle.json

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+{
+    "name": "@ohos/iptables",
+    "description": "iptables is the userspace command line program used to configure the Linux 2.4.x and later packet filtering ruleset. It is targeted towards system administrators.",
+    "version": "v1.8.7",
+    "license": "GPL V2.0",
+    "publishAs": "code-segment",
+    "segment": {
+        "destPath": "third_party/iptables"
+    },
+    "dirs": {},
+    "scripts": {},
+    "licensePath": "COPYING",
+    "component": {
+        "name": "iptables",
+        "subsystem": "thirdparty",
+        "syscap": [],
+        "features": [],
+        "adapted_system_type": [],
+        "rom": "",
+        "ram": "",
+        "deps": {
+            "components": [],
+            "third_party": []
+        },
+        "build": {
+            "sub_component": [],
+            "inner_kits": [],
+            "test": []
+        }
+    }
+}