Allow HA to change connected bluetooth device

**Is your feature request related to a problem? Please describe.**

I would like to change the connected bluetooth device when triggering an automation. This would allow to connect to a device that was previously offline

**Describe the solution you'd like**

Home Assistant should be able to run a service on a given device that triggers the change of the connected bluetooth device

**Describe alternatives you've considered, if any**

**Additional context**

Related/Similar to #436