mqtt username and password
**Is your feature request related to a problem? Please describe:**
Need to be able to enter mqtt username and password

**Describe the solution you'd like:**
in settings enter username and password for the mqtt broker

**Describe alternatives you've considered:**
none

**Additional context:**
Add username and password here:
![image](https://github.com/hjdhjd/homebridge-myq/assets/78762281/432502ed-044e-4500-ae17-b2589258fc76)



