First attempt at kea dhcp support

docs/PLUGINS.md

@@ -62,6 +62,7 @@ Device-detecting plugins insert values into the `CurrentScan` database table.  T
 | `INTRNT`        | [internet_ip](https://github.com/netalertx/NetAlertX/tree/main/front/plugins/internet_ip/)                         | 🔍       | Internet IP scanner                       |          |          |
 | `INTRSPD`       | [internet_speedtest](https://github.com/netalertx/NetAlertX/tree/main/front/plugins/internet_speedtest/)           | ♻        | Internet speed test                       |          |          |
 | `IPNEIGH`       | [ipneigh](https://github.com/netalertx/NetAlertX/tree/main/front/plugins/ipneigh/)                                  | 🔍       | Scan ARP (IPv4) and NDP (IPv6) tables     |          |          |
+| `KEALSS`        | [kea_api](https://github.com/netalertx/NetAlertX/tree/main/front/plugins/kea_api/)                                  | 🔍/🆎     | Pull lease data from the Kea DHCP API     |          |          |
 | `LUCIRPC`       | [luci_import](https://github.com/netalertx/NetAlertX/tree/main/front/plugins/luci_import/)                         | 🔍       | Import connected devices from OpenWRT     |          |          |
 | `MAINT`         | [maintenance](https://github.com/netalertx/NetAlertX/tree/main/front/plugins/maintenance/)                          | ⚙        | Maintenance of logs, etc.                 |          |          |
 | `MQTT`          | [_publisher_mqtt](https://github.com/netalertx/NetAlertX/tree/main/front/plugins/_publisher_mqtt/)                | ▶️       | MQTT for synching to Home Assistant       |          |          |

front/plugins/kea_api/README.md

@@ -0,0 +1,99 @@
+## Overview
+
+A plugin allowing for importing devices from the Kea DHCP API.  
+https://www.isc.org/kea/
+
+And specifically:
+https://kea.readthedocs.io/en/kea-2.6.3/api.html#lease4-get-all
+
+
+### Usage
+
+To enable the API, first you want to add something like this to your main kea configuration (this is for debian 13):
+
+```json
+    "control-socket": {
+        "socket-type": "unix",
+        "socket-name": "/run/kea/kea4-ctrl-socket"
+    },
+
+    "hooks-libraries": [
+        {
+            "library": "/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so"
+        }
+    ],
+```
+
+
+And you need to install kea-ctrl-agent, with a config that looks something like this:
+
+```json
+{
+"Control-agent": {
+    "http-host": "127.0.0.1",
+    "http-port": 8000,
+
+    "authentication": {
+        "type": "basic",
+        "realm": "Kea Control Agent",
+        "directory": "/etc/kea",
+        "clients": [
+            {
+                "user": "kea-api",
+                "password-file": "kea-api-password"
+            }
+        ]
+    },
+    "control-sockets": {
+        "dhcp4": {
+            "socket-type": "unix",
+            "socket-name": "/run/kea/kea4-ctrl-socket"
+        }
+    },
+    "loggers": [
+    {
+        "name": "kea-ctrl-agent",
+        "output-options": [
+            {
+                "output": "stdout",
+                "pattern": "%-5p %m\n"
+            }
+        ],
+        "severity": "INFO",
+        "debuglevel": 0
+    }
+  ]
+}
+}
+```
+
+You will need to configure the plugin with the URL to the API, and the username and password configured above (from kea-api-password file in the example)
+
+
+#### Required Settings
+
+These settings are required, besides the common device scanner settings:
+
+- **Kea Control Agent URL** (`KEALSS_URL`): The full URL, including port number, to the Kea API.
+  - Default: `http://127.0.0.1:8000`
+  - This mirrors what you set up in the kea-ctrl-agent configuration.
+
+- **Basic Auth Username** (`KEALSS_USER`): The user to use for authenticating with the Kea API. 
+  - Default: `kea-api`
+  - This mirrors what you set up in the kea-ctrl-agent configuration.
+
+- **Basic Auth Password** (`KEALSS_PASS`): The password to use for authenticating with the Kea API. 
+  - This mirrors what you set up in the kea-ctrl-agent configuration.
+  - When using a password file, it should be the content of the password file.
+
+
+### Notes
+
+- This was tested on a basic Debian 13 install.
+- When you install kea-ctrl-agent, it should ask you about creating a password.
+- It's possible to run kea-ctrl-agent without password, but it's not recommended and at the moment we don't support that.
+- I may provide some minimal support, if you ask nicely :)
+
+- Version: 1.0.0
+- Author: `void-spark`
+- Release Date: `11/05/2026`