1. Proposed title of this feature request
     Add/expose metrics in Prometheus for MachineConfigOperator.
        
2. What is the nature and description of the request?
     Customer like to have in Prometheus some metrics of MachineConfigOperator. For each MCP:
    
    - Paused
    - Updated
    - Updading
    - Degraded
    - Machinecount
    - ReadyMachineCount
    - UpdatedMachineCount
    - DegradedMachineCount
   

3. Why does the customer need this? (List the business requirements here)
     These metrics would be really important, as it could show any MachineConfig action (updating, degraded, ...), which could also even trigger an alarm with a PrometheusRule. Having a dashboard of MachineConfig would be also really useful.

4. List any affected packages or components.

   MCO and Monitoring