Support creating repositories from repository templates

[FidelusAleksander]

Describe the feature or problem you’d like to solve

I would like to be able to create repositories using repository templates with GitHub MCP Server.

Proposed solution

Either have the repository template as a flag in the create_repository tool or have a separate tool create_repository_from_template.

Additional context

Looks like there were already two approaches submitted for this
#417
#229