Add new scripts for system monitoring and remove deprecated scripts

scripts/cpu

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+# Module showing overall CPU usage as a percentage.
+# Cache in tmpfs to improve speed and reduce SSD load
+cache=/tmp/cpubarscache
+
+# Extract CPU stats (total time and idle time)
+cpu_stats=$(awk '/^cpu / {print $2 + $3 + $4 + $5, $5}' /proc/stat)
+
+# Check if cache exists, if not, initialize it
+[ ! -f $cache ] && echo "$cpu_stats" > "$cache"
+
+# Read previous CPU stats from cache
+prev_stats=$(cat "$cache")
+
+# Calculate CPU usage percentage and exit immediately
+echo "$cpu_stats $prev_stats" | awk '{
+    total_diff = $1 - $3
+    idle_diff = $2 - $4
+    usage = 100 * (1 - idle_diff / total_diff)
+    printf " %.1f%%\n", usage
+    exit  # Terminate script after printing the first line
+}'
+
+# Update cache with current stats
+echo "$cpu_stats" > "$cache"