🛠 Fix Home Assistant Add-on Repository Structure

Commit description:

    Moved add-on files into a dedicated newt/ subfolder
    Added repository.json to the root for Home Assistant recognition
    Ensured config.yaml is inside the newt/ directory
    Verified correct directory structure for add-on compatibility
    Improved repository setup for proper installation in Home Assistant

newt/config.yaml

@@ -0,0 +1,21 @@
+name: "Newt Add-on"
+version: "1.0.0"
+slug: "newt"
+description: "Kjører Newt-containeren i Home Assistant"
+arch:
+  - amd64
+  - armv7
+  - armhf
+  - aarch64
+startup: "system"
+boot: "auto"
+host_network: true
+privileged: true
+options:
+  PANGOLIN_ENDPOINT: "https://example.com"
+  NEWT_ID: "your_newt_id"
+  NEWT_SECRET: "your_newt_secret"
+schema:
+  PANGOLIN_ENDPOINT: "str"
+  NEWT_ID: "str"
+  NEWT_SECRET: "str"