Create repository from template

### Describe the feature or problem you’d like to solve

GitHub MCP's repository tools don't let me create a new repo from a template repository.

### Proposed solution

Add a parameter to the `create_repository ` tool that allows you to specify a repo template.

### Example prompts or workflows (for tools/toolsets only)

"Create a new repo from my compose-template repo and add nginx and postgres to the compose file."

"Create a new Flask API repo from my flask-template repo and implement the API endpoints needed by the frontend we are working on."

"Create a new kubernetes cluster by duplicating my k8s-cluster-template repo and changing the customer_name in config.yaml to example-org."

### Additional context

N/A