chore: import upstream snapshot with attribution

examples/runtime_plugins/all_plugin.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# Example plugin for LMCache system
+# This plugin runs continuously and exits when parent process terminates
+
+# Handle termination signal
+trap "echo 'Received termination signal, exiting...'; exit 0" SIGTERM
+
+role="$LMCACHE_RUNTIME_PLUGIN_ROLE"
+worker_id="$LMCACHE_RUNTIME_PLUGIN_WORKER_ID"
+worker_count="$LMCACHE_RUNTIME_PLUGIN_WORKER_COUNT"
+config="$LMCACHE_RUNTIME_PLUGIN_CONFIG"
+
+echo "All plugin started for role: $role, worker ID: $worker_id, worker count: $worker_count"
+echo "All plugin accept LMCache Config: $config"
+
+loop_count=0
+while true; do
+    echo "All plugin is running for ${role} ${worker_id}...(loop_count: ${loop_count})"
+    loop_count=$((loop_count + 1))
+    sleep 10
+done