"Restart FlowFuse" Button for Administrators in FlowFuse UI

### Description

The FlowFuse user interface is designed to abstract away complex underlying processes.
In organizations with structured roles, individuals responsible for deploying components (developers in development environments, ops in CI/CD, and business delivery in production) are granted varying levels of access.

Currently, applying a license in FlowFuse is considered a 'soft admin' action and can be done through the UI. However, a specific scenario arises when applying a license to a previously non-licensed FlowFuse instance. This action necessitates a restart of the FlowFuse container.

To streamline this process and maintain role-based access integrity, it is proposed to introduce a 'Restart FlowFuse' button within the UI.
This feature will enable soft admins to complete the license application process without the need for direct Kubernetes access, adhering to the principle of minimizing direct intervention with the system's 'wheels'.

### Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate