Feature/MCP (Model Context Protocol) (#4134)

add mcp tools

packages/components/credentials/SlackApi.credential.ts

@@ -0,0 +1,32 @@
+import { INodeParams, INodeCredential } from '../src/Interface'
+
+class SlackApi implements INodeCredential {
+    label: string
+    name: string
+    version: number
+    description: string
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'Slack API'
+        this.name = 'slackApi'
+        this.version = 1.0
+        this.description =
+            'Refer to <a target="_blank" href="https://github.com/modelcontextprotocol/servers/tree/main/src/slack">official guide</a> on how to get botToken and teamId on Slack'
+        this.inputs = [
+            {
+                label: 'Bot Token',
+                name: 'botToken',
+                type: 'password'
+            },
+            {
+                label: 'Team ID',
+                name: 'teamId',
+                type: 'string',
+                placeholder: '<SLACK_TEAM_ID>'
+            }
+        ]
+    }
+}
+
+module.exports = { credClass: SlackApi }