Fix parsing issues

[Park-SeungWoo]

Fix: Partial Parsing of $ref Objects and Schema Examples in Request Body

Hi there 👋

I recently came across this project and gave it a try using the specs in the example/ directory. While testing, I noticed a few issues related to parsing and transformation to mcp tool spec. I've made some initial fixes, specifically targeting the request body section for now.

✅ Changes Included

1. $ref Object Parsing

   • Implemented a function that replaces an object containing a $ref key with its corresponding target object from p.document.components.

2. Unexpected Fields in Tool Spec Conversion

   • While converting parsed request body data into tool spec format, some unknown fields were being included.
   • I suspect this might be due to compatibility with a different spec version.
   • As a temporary fix, I commented out the part

I only need ping.

3. Schema example Parsing

   • Added support for parsing the example field defined under schema.
   • Introduced a new field in the Schema struct to hold this data.

   Final output looks like this:

---

Let me know if this approach works for you. I'd be happy to help extend the fix to other parts if needed!

Thanks 🙌

[AnyISalIn]

Thank for your PR. I will check