Add fixtures and unit tests for auto suspend functionality

- Introduced fixture files for AMD and NVIDIA GPU monitoring outputs, CPU usage statistics, and user sessions.
- Created a comprehensive unit test suite for the auto_suspend module, covering state management, CPU and GPU measurement, user activity detection, and evaluation logic.
- Updated Ansible tasks to install Python instead of bc, create necessary directories and log files, and ensure proper SELinux context for the auto suspend script.
- Modified the systemd service and timer configurations to improve the auto suspend functionality, including command-line arguments for the Python script.

ansible/files/scripts/auto_suspend.sh

@@ -1,61 +0,0 @@
-#!/bin/bash
-
-IDLE_TIMEOUT_MINUTES=20
-
-# Check 1: Any logged-in users?
-if who | grep -qv "tty"; then
-    echo "Active user sessions found. Skipping suspend."
-    exit 0
-fi
-
-# Check 2: CPU idle percentage
-CPU_IDLE=$(mpstat 1 1 | tail -n 1 | awk '/:/ {print $12}' | sed 's/,/./g')
-CPU_THRESHOLD=90
-
-if (( $(echo "$CPU_IDLE < $CPU_THRESHOLD" | bc -l) )); then
-    echo "CPU too active. Skipping suspend."
-    exit 0
-fi
-
-if ! command -v nvidia-smi &> /dev/null; then
-  echo "nvidia-smi not found, skipping GPU check"
-else
-    # Check 3: Is GPU idle?
-    GPU_UTIL=$(nvidia-smi --query-gpu=utilization.gpu --format=csv,noheader,nounits | head -n 1)
-    GPU_THRESHOLD=0
-
-    if (( GPU_UTIL > GPU_THRESHOLD )); then
-        echo "GPU is busy (utilization=${GPU_UTIL}%). Skipping suspend."
-        exit 0
-    fi
-
-    # Check 4: Is OLLAMA active?
-    OLLAMA_ACTIVE=$(nvidia-smi --query-compute-apps=name,used_memory --format=csv,noheader,nounits | grep ollama | wc -l)
-    if (( OLLAMA_ACTIVE > 0 )); then
-        echo "OLLMAMA is active. Skipping suspend."
-        exit 0
-    fi
-fi
-
-if | command -v amd-smi &> /dev/null; then
-    # Check 5: Is AMD GPU idle?
-    AMD_GPU_UTIL=$(amd-smi monitor --csv | head -n 2 | tail -n 1 | cut -d ',' -f 8)
-    AMD_GPU_THRESHOLD=0
-
-    if (( AMD_GPU_UTIL > AMD_GPU_THRESHOLD )); then
-        echo "AMD GPU is busy (utilization=${AMD_GPU_UTIL}%). Skipping suspend."
-        exit 0
-    fi
-
-    if amd-smi process --csv | head -n 2 | tail -n 1 | grep -q "No running processes detected"; then
-        echo "No processes running on AMD GPU."
-    else
-        echo "Processes are running on AMD GPU. Skipping suspend."
-        exit 0
-    fi
-else
-    echo "amd-smi not found, skipping AMD GPU check"
-fi
-
-echo "System idle. Suspending..."
-shutdown now