Add JSON for each Script and a metadata.json file (#86)

* Generated JSON from database with changes suggested by maintainers. Includes a categories.json file that contains all the possible categories

* Renamed categories.json to metadata.json

json/postgresql.json

@@ -0,0 +1,34 @@
+{
+    "name": "PostgreSQL",
+    "slug": "postgresql",
+    "categories": [
+        5
+    ],
+    "date_created": "2024-05-02",
+    "type": "ct",
+    "updateable": false,
+    "privileged": false,
+    "interface_port": "5432",
+    "documentation": null,
+    "website": "https://www.postgresql.org/",
+    "logo": "https://raw.githubusercontent.com/loganmarchione/homelab-svg-assets/main/assets/postgresql.svg",
+    "description": "PostgreSQL (often referred to as Postgres) is an open-source relational database management system that is known for its extensibility and strict adherence to SQL standards. It is a free and powerful database solution, suitable for a wide range of applications, from small projects to large enterprise systems. PostgreSQL is widely used for its reliability, feature-richness, and robustness.",
+    "install_methods": [
+        {
+            "type": "default",
+            "script": "ct/postgresql.sh",
+            "resources": {
+                "cpu": "1",
+                "ram": "1024",
+                "hdd": "4",
+                "os": "debian",
+                "version": "12"
+            }
+        }
+    ],
+    "default_credentials": {
+        "username": null,
+        "password": null
+    },
+    "notes": []
+}