[Feature Request]: Add customer Types

### 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

Currently, for SHS users there is no easy way to assign labels to their customers or sales.

### Proposed Solution

Please add way to label customers with Types. Please also make sure the naturally integrated into all the dashboards and label management.

### Alternatives Considered

N/A

### Additional Information

Note, that this might need to be done together with https://github.com/EnAccess/micropowermanager/issues/266