feat: add inline-cpu-usage-percent script (#932)

commands/system/inline-cpu-usage-percent.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Required parameters:
+# @raycast.schemaVersion 1
+# @raycast.title CPU Usage
+# @raycast.mode inline
+# @raycast.packageName System
+# @raycast.refreshTime 10s
+
+# Optional parameters:
+# @raycast.icon 🖥️
+
+# Documentation:
+# @raycast.description Display CPU usage percent
+# @raycast.author Juan Luis Romero
+# @raycast.authorURL https://github.com/JuanluR8
+
+
+output=$(top -l 1 | grep "CPU usage")
+cpu_usage=$(echo "$output" | awk -F " " '{print $3}' | cut -d% -f1)
+
+echo "CPU Usage: ${cpu_usage}%"