Add composer.json

composer.json

+{
+    "name": "drupal/field_ipaddress_pgsql",
+    "description": "Provides field types that are stored and processed as PostgreSQL network address types.",
+    "type": "drupal-module",
+    "license": "GPL-2.0-or-later",
+    "minimum-stability": "dev",
+    "homepage": "https://www.drupal.org/project/field_ipaddress_pgsql",
+    "authors": [
+        {
+            "name": "Andrey Vitushkin (wombatbuddy)",
+            "homepage": "https://www.drupal.org/u/wombatbuddy",
+            "role": "Maintainer"
+        }
+    ],
+    "support": {
+        "issues": "https://www.drupal.org/project/issues/field_ipaddress_pgsql",
+        "source": "https://git.drupalcode.org/project/field_ipaddress_pgsql"
+    },
+    "require": {
+        "drupal/core": "^10 || ^11",
+        "php": ">=8.1"
+    }
+}