Chore/Update issue templates and add new tools (#4687)

* Enhancement: Update issue templates and add new tools

- Updated bug report template to include a default label of 'bug'.
- Updated feature request template to include a default label of 'enhancement'.
- Added new credential class for Agentflow API.
- Enhanced Agent and HTTP nodes to improve tool management and error handling.
- Added deprecation badges to several agent and chain classes.
- Introduced new tools for handling requests (GET, POST, DELETE, PUT) with improved error handling.
- Added new chatflows and agentflows for various use cases, including document QnA and translation.
- Updated UI components for better handling of agent flows and marketplace interactions.
- Refactored utility functions for improved functionality and clarity.

* Refactor: Remove beta badge and streamline template title assignment

- Removed the 'BETA' badge from the ExtractMetadataRetriever class.
- Simplified the title assignment in the agentflowv2 generator by using a variable instead of inline string manipulation.

packages/components/nodes/chains/MultiRetrievalQAChain/MultiRetrievalQAChain.ts

@@ -15,12 +15,14 @@ class MultiRetrievalQAChain_Chains implements INode {
     category: string
     baseClasses: string[]
     description: string
+    badge: string
     inputs: INodeParams[]
 
     constructor() {
         this.label = 'Multi Retrieval QA Chain'
         this.name = 'multiRetrievalQAChain'
         this.version = 2.0
+        this.badge = 'DEPRECATING'
         this.type = 'MultiRetrievalQAChain'
         this.icon = 'qa.svg'
         this.category = 'Chains'