feat!: implement support for the MCP protocol version 2025-06-18

[hashemix]

📌 Summary

This PR adds support for the MCP protocol version 2025-06-18.

🔍 Related Issues

• 2025_06_18 Protocol Support #68
• Unable to run the hello-world-mcp-server example #69

✨ Changes Made

• Updated rust-mcp-sdk package to the latest version (0.7) with 2025-06-18 support
• Extended the server handler trait to handle the newly introduced ElicitRequest
• Updated rust-mcp-macros to align with changes in the Tool struct, including support for new attributes like meta and title
• Adjusted CallToolResult::text_content invocations for compatibility with changes in rust-mcp-schema version 0.7
• Aligned README, docs, and code examples with the 2025-06-18 update
• Added a Cargo feature targeting 2025-06-18 and enabled it by default
• Adjusted tests to cover updated logic and new MCP features.

🛠️ Testing Steps

in the root of the the rpo run:

cargo make check

💡 Additional Notes

In the rust-mcp-schema package, some constructor functions of CallToolResult within schema_utils have been modified. When updating your code to the latest version, please make sure to adjust your code accordingly.
For instance:

- CallToolResult::text_content( "Hello World!".to_string(), None,)
 
+ CallToolResult::text_content( vec![ TextContent::from("Hello World!".to_string()) ]  )