Add MKP Server to awesome MCP servers list (#258)

Add MKP (Model Kontext Protocol Server for Kubernetes) to the README.md.

MKP is a native Go implementation that allows LLM-powered applications to interact with Kubernetes clusters through direct API integration, providing comprehensive resource management capabilities.

Repository: https://github.com/StacklokLabs/mkp

README.md

@@ -283,6 +283,7 @@ A growing set of community-developed and maintained servers demonstrates various
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+- **[MKP](https://github.com/StacklokLabs/mkp)** - Model Kontext Protocol Server for Kubernetes that allows LLM-powered applications to interact with Kubernetes clusters through native Go implementation with direct API integration and comprehensive resource management.
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