Allow override of name and description of McpClientTool

[PederHP]

Addresses #154 by providing utility to clone McpClientTool with a new name or description. This will mostly be useful for hosts that need to be robust against user-configurable MCP servers (to avoid name conflicts by prefixing with the server name) and for hosts that use MCP servers known at development time where evaluation pipelines have shown that the name and/or descriptions of tools do not result in acceptable tool calling accuracy.

This could be used like this:

if (myExamples.ContainsKey(tool.Name))
{
  tool = tool.WithDescription(tool.Description + "\n\nExample Usage:\n" + myExamples[tool.Name]);
}

or

return tools.Select(tool => tool.WithName($"{client.ServerInfo.Name}_{tool.Name}"));

[halter73]

While I'm not a huge fan of "With" methods outside of builder types, I don't have a better alternative at the moment😄

[eiriktsarpalis]

While I'm not a huge fan of "With" methods outside of builder types, I don't have a better alternative at the moment😄

I think using With is perfectly fine in the context of immutable persistable updates, C# records use the with keyword for essentially the same thing.

[eiriktsarpalis]

Thanks