[Feature Request]: Sending on/off commands to a given Calinmeter

### Preflight Checklist

- [x] I have read the [Contributing Guidelines](https://github.com/EnAccess/micropowermanager/blob/main/CONTRIBUTING.md) for this project, if it exists.
- [x] I agree to follow the [Code of Conduct](https://github.com/EnAccess/micropowermanager/blob/main/CODE_OF_CONDUCT.md) that this project adheres to.
- [x] I have searched the [issue tracker](https://github.com/EnAccess/micropowermanager/issues) for a feature request that matches the one I want to file, without success.

### Problem Description

As a microgrid developer, I would like to use MPM to remotely turn on/off powerflow for CalinSmartMeter so that I can steer energy usage on the microgrid

### Proposed Solution

Add a toggle on/off switch in the MPM UI for each meter that toggles builtin meter relay on/off

### Alternatives Considered

My current alternative is to connect to the CalinSmartMeters via their proprietary AMI and toggle them on/off that way. I can show you a demo for this in a week or two when we have some CalinSmartMeters connected.

### Additional Information

They provided me [documentation](https://www.postman.com/nearly-free-energy/nearly-free-energy/overview) for their API (postman collection).