pihole-exporter (#10091)

Co-authored-by: push-app-to-main[bot] <203845782+push-app-to-main[bot]@users.noreply.github.com>
Co-authored-by: Tobias <96661824+CrazyWolf13@users.noreply.github.com>

frontend/public/json/pihole-exporter.json

@@ -0,0 +1,46 @@
+{
+    "name": "Pi-Hole Exporter",
+    "slug": "pihole-exporter",
+    "categories": [
+        9
+    ],
+    "date_created": "2025-12-08",
+    "type": "addon",
+    "updateable": true,
+    "privileged": false,
+    "interface_port": 9617,
+    "documentation": "https://github.com/eko/pihole-exporter",
+    "website": "https://github.com/eko/pihole-exporter",
+    "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/pi-hole.webp",
+    "config_path": "/opt/pihole-exporter.env",
+    "description": "A Prometheus exporter for PI-Hole's Raspberry PI ad blocker",
+    "install_methods": [
+        {
+            "type": "default",
+            "script": "tools/addon/pihole-exporter.sh",
+            "resources": {
+                "cpu": null,
+                "ram": null,
+                "hdd": null,
+                "os": null,
+                "version": null
+            }
+        },
+        {
+            "type": "alpine",
+            "script": "tools/addon/pihole-exporter.sh",
+            "resources": {
+                "cpu": null,
+                "ram": null,
+                "hdd": null,
+                "os": null,
+                "version": null
+            }
+        }
+    ],
+    "default_credentials": {
+        "username": null,
+        "password": null
+    },
+    "notes": []
+}