Installer-rework

split installer structure into systems, updated non-functional Debian12 installer with some minor fixes to Ubuntu24 installer.
Updated docs.

install/debian12/install.debian12.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+# 🛑 Important: This is only used for the bare-metal install 🛑 
+# Update /install/start.debian12.sh in most cases is preferred 
+
+echo "---------------------------------------------------------"
+echo "[INSTALL]                         Run install.debian12.sh"
+echo "---------------------------------------------------------"
+
+# Set environment variables
+INSTALL_DIR=/app  # Specify the installation directory here
+
+# Check if script is run as root
+if [[ $EUID -ne 0 ]]; then
+    echo "This script must be run as root. Please use 'sudo'." 
+    exit 1
+fi
+
+# Prepare the environment
+apt-get update
+apt-get install sudo -y
+
+# Install Git
+apt-get install -y git
+
+# Clean the directory
+rm -R $INSTALL_DIR/
+
+# Clone the application repository
+git clone https://github.com/jokob-sk/NetAlertX "$INSTALL_DIR/"
+
+# Check for buildtimestamp.txt existence, otherwise create it
+if [ ! -f $INSTALL_DIR/front/buildtimestamp.txt ]; then
+  date +%s > $INSTALL_DIR/front/buildtimestamp.txt
+fi
+
+# Start NetAlertX
+chmod +x "$INSTALL_DIR/install/debian12/start.debian12.sh"
+"$INSTALL_DIR/install/debian12/start.debian12.sh"