feat: Ability to improve drafts in the editor using GPT integration (#6957)

ref: https://github.com/chatwoot/chatwoot/issues/6436
fixes: https://linear.app/chatwoot/issue/CW-1552/ability-to-rephrase-text-in-the-editor-using-gpt-integration

---------

Co-authored-by: Sojan <sojan@pepalo.com>
Co-authored-by: Nithin David Thomas <1277421+nithindavid@users.noreply.github.com>

config/integration/apps.yml

@@ -128,3 +128,27 @@ google_translate:
     },
   ]
   visible_properties: ['project_id']
+openai:
+  id: openai
+  logo: openai.png
+  i18n_key: openai
+  action: /openai
+  hook_type: account
+  allow_multiple_hooks: false
+  settings_json_schema: {
+    "type": "object",
+    "properties": {
+        "api_key": { "type": "string" },
+      },
+    "required": ["api_key"],
+    "additionalProperties": false,
+  }
+  settings_form_schema: [
+    {
+      "label": "API Key",
+      "type": "text",
+      "name": "api_key",
+      "validation": "required",
+    },
+  ]
+  visible_properties: ['api_key']