feat(installer/cli): Add OS detection and git auto-installation support to install.sh and improve service setup prompt in CLI

install.sh

@@ -17,6 +17,78 @@ if [ ! -t 0 ]; then
   PIPED=1
 fi
 
+# Helper function to detect OS type
+detect_os() {
+  if [ -f /etc/os-release ]; then
+    . /etc/os-release
+    OS=$ID
+  elif type lsb_release >/dev/null 2>&1; then
+    OS=$(lsb_release -si | tr '[:upper:]' '[:lower:]')
+  elif [ -f /etc/lsb-release ]; then
+    . /etc/lsb-release
+    OS=$DISTRIB_ID
+  elif [ -f /etc/debian_version ]; then
+    OS="debian"
+  elif [ -f /etc/redhat-release ]; then
+    if grep -q "CentOS" /etc/redhat-release; then
+      OS="centos"
+    elif grep -q "Fedora" /etc/redhat-release; then
+      OS="fedora"
+    else
+      OS="rhel"
+    fi
+  else
+    OS=$(uname -s)
+  fi
+  echo $OS
+}
+
+# Helper function to install git
+install_git() {
+  OS=$(detect_os)
+  echo "Detected OS: $OS"
+  
+  case "$OS" in
+    ubuntu|debian|pop|mint|elementary|kali|zorin)
+      echo "Installing git using apt..."
+      apt-get update && apt-get install -y git
+      ;;
+    fedora|rhel|centos|almalinux|rocky)
+      echo "Installing git using dnf/yum..."
+      if command -v dnf &> /dev/null; then
+        dnf install -y git
+      else
+        yum install -y git
+      fi
+      ;;
+    arch|manjaro|endeavouros|garuda)
+      echo "Installing git using pacman..."
+      pacman -Sy --noconfirm git
+      ;;
+    opensuse*|suse|sles)
+      echo "Installing git using zypper..."
+      zypper install -y git
+      ;;
+    alpine)
+      echo "Installing git using apk..."
+      apk add git
+      ;;
+    *)
+      echo "Unsupported OS: $OS"
+      echo "Please install git manually and run the installer again."
+      exit 1
+      ;;
+  esac
+  
+  # Check if git was installed successfully
+  if ! command -v git &> /dev/null; then
+    echo "Failed to install git. Please install git manually and run the installer again."
+    exit 1
+  fi
+  
+  echo "Git installed successfully."
+}
+
 # Define installation directory
 INSTALL_DIR="/opt/nupst"
 REPO_URL="https://code.foss.global/serve.zone/nupst.git"
@@ -26,8 +98,15 @@ if [ $PIPED -eq 1 ]; then
   
   # Check if git is installed
   if ! command -v git &> /dev/null; then
-    echo "Git is required but not installed. Please install git first."
-    exit 1
+    echo "Git is required but not installed."
+    read -p "Would you like to install git now? (Y/n): " install_git_prompt
+    
+    if [[ "$install_git_prompt" =~ ^[Nn]$ ]]; then
+      echo "Git installation skipped. Please install git manually and run the installer again."
+      exit 1
+    else
+      install_git
+    fi
   fi
   
   # Check if installation directory exists