new classes based on json descriptor

files/api/component_descriptors.json

@@ -0,0 +1,29 @@
+[
+  {
+    "name": "CPU",
+    "description": "{model_name} with {core_count} cores.",
+    "multi_check": "False",
+    "properties": {
+      "core_count": "lscpu --json | jq -r '.lscpu[] | select(.field==\"CPU(s):\") | .data'",
+      "model_name": "lscpu --json | jq -r '.lscpu[] | select(.field==\"Model name:\") | .data'"
+    },
+    "metrics": {
+      "1m_load": "cat /proc/loadavg | awk '{print $1}'",
+      "5m_load": "cat /proc/loadavg | awk '{print $2}'",
+      "15m_load": "cat /proc/loadavg | awk '{print $3}'"
+    }
+  },
+  {
+    "name": "RAM",
+    "description": "Total {bytes_total}GB in {module_count} modules.",
+    "multi_check": "False",
+    "properties": {
+      "bytes_total": "sudo lshw -json -c memory | jq -r '.[] | select(.description==\"System Memory\").size' | awk '{printf \"%.2f\\n\", $1/1073741824}'",
+      "module_count": "sudo lshw -json -c memory | jq -r '.[] | select(.id | contains(\"bank\")) | .id ' | wc -l"
+    },
+    "metrics": {
+      "used_capacity_mb": "free -m | grep Mem | awk '{print $3}'",
+      "free_capacity_mb": "free -m | grep Mem | awk '{print $4}'"
+    }
+  }
+]