Let users toggles MCPs as easily as it's with skills.

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

MCP toggling requires explicit commands, skills can be toggled from the list with spacebar/enter.

### Proposed solution

As it is already with skills users should be ready to type /mcp, move up and down the list and toggle them on/off with the space bar/enter.
MCPs take lots of context and it should be easy to toggle them on/poff without requiring individual commands.

### Example prompts or workflows

_No response_

### Additional context

_No response_

Comece com a interação existente da lista de skills e o fluxo do comando /mcp descrito na issue. Adicione uma navegação de lista equivalente e a alternância com a barra de espaço/Enter para MCPs; em seguida, verifique se os usuários podem habilitar e desabilitar MCPs sem comandos individuais.

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