Found Bug in OpenAPI Docs - not correctly reflecting Models 🐛
**Describe the bug** 🐛
The file `openapi.json` does not reflect endpoints correctly, it does not parse input objects correctly. When accepting a custom model as input to a post request, it is not reflected correctly to the `openapi.json` and the endpoint `/docs/swagger`.

**To Reproduce** 👨‍🔬
This is a minimal example:

```nim
import happyx

# Here are the enums
type
    options_encoding* = enum
        encodingA, encodingB

# here is some model 
model DataProcessRequest: 
    data: string = ""
    storage: options_encoding = encodingA
    xtemplate: string = "" 

# Serve at http://127.0.0.1:5000
serve "0.0.0.0", 5000:

  # on GET HTTP method at http://127.0.0.1:5000/
  get "/":
    {.gcsafe.}:
      return %*{
        "response": "success",
        "msg": "These are not the droids, you're looking for."
      }

  post "/api/process[r:DataProcessRequest:json]":
    {.gcsafe.}:
      # Return plain text

      # process data here

      return %*{
        "response": "success"
      }
      
```

The OpenAPI results in this:
```json
{"openapi":"3.1.0","swagger":"2.0","info":{"title":"HappyX OpenAPI Docs","version":"1.0.0"},"paths":{"/":{"get":{"description":"","parameters":[],"requestBody":{},"responses":{}}},"/api/process":{"post":{"description":"","parameters":[],"requestBody":{},"responses":{}}}},"components":{"schemas":{"DataProcessRequest":{"type":"object","properties":{"data":{"type":"string"},"xtemplate":{"type":"string"}}}},"parameters":{},"responses":{},"securitySchemas":{},"headers":{},"links":{},"callbacks":{},"pathItems":{},"examples":{},"requestBodies":{},"/":{},"/api/process":{}}}
```

As you can see the Object is missing the enum, also it is not reflected to the frontend (see screenshot).
(Also the correct return codes are missing as this can only return a 200, but this is a minor thing in this case)

**Expected behavior** 🤔
I expect the two endpoints to be visible and correctly typed in the `openapi.json`.

**Screenshots** 🖼
![grafik](https://github.com/user-attachments/assets/a82889fc-e087-4532-975b-6656fd1165d7)

**Please complete the following information** 📃
 - OS: Ubuntu
 - OS Version 22.04
 - HappyX version 4.6.2
 - HappyX project type [ssr/spa]
 <!-- For SSR projects -->
 - HappyX project language Nim
 - Nim version 2.0.4
 - HTTP Server Default

