Feature/seq agents (#2798)

* update build functions

* sequential agents

* update langchain to 0.2, added sequential agent nodes

* add marketplace templates

* update howto wordings

* Merge branch 'main' into feature/Seq-Agents

# Conflicts:
#	pnpm-lock.yaml

* update deprecated functions and add new sequential nodes

* add marketplace templates

* update marketplace templates, add structured output to llm node

* add multi agents template

* update llm node with bindmodels

* update cypress version

* update templates sticky note wordings

* update tool node to include human in loop action

* update structured outputs error from models

* update cohere package to resolve google genai pipeThrough bug

* update mistral package version, added message reconstruction before invoke seq agent

* add HITL to agent

* update state messages restructuring

* update load and split methods for s3 directory

packages/server/marketplaces/agentflows/Prompt Engineering Team.json

@@ -1,5 +1,7 @@
 {
     "description": "Prompt engineering team working together to craft Worker Prompts for your AgentFlow.",
+    "framework": ["Langchain"],
+    "usecases": ["Engineering"],
     "nodes": [
         {
             "id": "supervisor_0",