Feat/Exa Search Tool (#2524)

* add exa search tool

* add exa svg

packages/components/credentials/ExaSearchApi.credential.ts

@@ -0,0 +1,26 @@
+import { INodeParams, INodeCredential } from '../src/Interface'
+
+class ExaSearchApi implements INodeCredential {
+    label: string
+    name: string
+    version: number
+    description: string
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'Exa Search API'
+        this.name = 'exaSearchApi'
+        this.version = 1.0
+        this.description =
+            'Refer to <a target="_blank" href="https://docs.exa.ai/reference/getting-started#getting-access">official guide</a> on how to get an API Key from Exa'
+        this.inputs = [
+            {
+                label: 'ExaSearch Api Key',
+                name: 'exaSearchApiKey',
+                type: 'password'
+            }
+        ]
+    }
+}
+
+module.exports = { credClass: ExaSearchApi }