Feat/llm update (#936)

* add support for llm:update during LLM session

* make sure to end openai session when Llm task is killed

* wip

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lib/tasks/llm/index.js

@@ -79,7 +79,18 @@ class TaskLlm extends Task {
     this.llm.processToolOutput(this.ep, tool_call_id, data);
   }
 
-
+  async processLlmUpdate(data, callSid) {
+    if (this.ep.connected) {
+      if (typeof this.llm.processLlmUpdate === 'function') {
+        this.llm.processLlmUpdate(this.ep, data, callSid);
+      }
+      else {
+        const {vendor, model} = this.llm;
+        this.logger.info({data, callSid},
+          `TaskLlm:_processLlmUpdate: LLM ${vendor}:${model} does not support llm:update`);
+      }
+    }
+  }
 }
 
 module.exports = TaskLlm;