New script: Mylar3 LXC (#554)

* Add new LXC: Mylar3

* Apply suggestions from code review

The rest of the suggestions will be addressed in my local repo and pushed back

Co-authored-by: Håvard Gjøby Thom <34199185+havardthom@users.noreply.github.com>

* Additional changes based on the code review

* The application is no longer updatable via the user interface

---------

Co-authored-by: Håvard Gjøby Thom <34199185+havardthom@users.noreply.github.com>

json/mylar3.json

@@ -0,0 +1,34 @@
+{
+    "name": "Mylar3",
+    "slug": "mylar3",
+    "categories": [
+        12
+    ],
+    "date_created": "2024-11-27",
+    "type": "ct",
+    "updateable": true,
+    "privileged": false,
+    "interface_port": "8090",
+    "documentation": "https://mylarcomics.com/docs/introduction/",
+    "website": "https://mylarcomics.com/",
+    "logo": "https://mylarcomics.com/img/mylarlogo.png",
+    "description": "Mylar is an automated Comic Book (cbr/cbz) downloader program for use with NZB and torrents.\r\nMylar allows you to create a watchlist of series that it monitors for various things (new issues, updated information, etc). It will grab, sort, and rename downloaded issues. It will also allow you to monitor weekly pull-lists for items belonging to said watchlisted series to download, as well as being able to monitor and maintain story-arcs.",
+    "install_methods": [
+        {
+            "type": "default",
+            "script": "ct/mylar3.sh",
+            "resources": {
+                "cpu": "1",
+                "ram": "512",
+                "hdd": "4",
+                "os": "debian",
+                "version": "12"
+            }
+        }
+    ],
+    "default_credentials": {
+        "username": null,
+        "password":  null
+    },
+    "notes": []
+}