SnipeIT install Script (#538)

* Bare Metal install Script for SnipeIT

* Fixed Copyright Header

* Worked in all requested Changes and also added the Update function.
Per my testing all is working as intendet.

json/snipeit.json

@@ -0,0 +1,31 @@
+{
+    "name": "SnipeIT",
+    "slug": "snipeit",
+    "categories": [
+        8
+    ],
+    "date_created": "2024-25-11",
+    "type": "ct",
+    "updateable": false,
+    "privileged": false,
+    "interface_port": null,
+    "documentation": null,
+    "website": "https://snipeitapp.com/",
+    "logo": "https://github.com/snipe/snipe-it/blob/master/public/img/logo.png",
+    "description": "This is a FOSS project for asset management in IT Operations. Knowing who has which laptop, when it was purchased in order to depreciate it correctly, handling software licenses, etc.",
+    "install_methods":{
+            "type": "default",
+            "script": "ct/snipeit.sh",
+            "resources": {
+                "cpu": "2",
+                "ram": "2048",
+                "hdd": "4",
+                "os": "debian",
+                "version": "12"
+            }
+        },
+    "default_credentials": {
+        "username": null,
+        "password": null
+    }
+}